Last modified Tuesday, January 11, 2000 5:03 pm

The reverse sum (versum) sequence starting at 1

2,4,8,16,77,154,605,1111,2222,4444,8888,17776,85547,160105,661166,1322332,3654563,
7309126,13528163,49710694,99312488,187733887,976071668,1842242347,9274664828,17559329557,
93151725128,175304440267,937348843838,1775697687577,9533565653348,17967131306707,
88727444483678,176365888956466,841025777520137,1572051555040285,7392457106543036,
13695913124085973,51653955256045604,92308020511981219,183526932014061548,
1028687342253686929,10325550864691555130,13481070511497107431,26951249923004125862,
53803389955998341824,96617779911996672659,192245449823994444328,1015689949152938986619,
10182588341672438851720,12898471769286827379821,25795844637583544869642,
50492689176157189729394,99885487351324388358799,199670875693639766817698,
1096389543630036344894689,10961373979930399804731590,20475114879234397742048491,
39959139658577695583205893,79809378218255281276401886,148619845436510562563792783,
535917210701526197112709624,962824422493151304125429159,1914748943896302698349857428,
10162338382858339681848331619,101775723201551725510231657720,
129531855217078880612559234821,257964810433167751325117370742,
505038521956325512659135840494,999087053912541036318261670999,
1998163216726171181537612451998,10989705384077982897813736070989,
109896769115957811874862086869890,208865449384435930634374054568791,
406730899857871970168857999137593,802462899616733049347616997175197,
1594034699233476989685233995439405,6643380692559346886428563959744356,
13177860286217593772868116920577822,36055363247404421512439385127454953,
72000835405797843024879859363810016,133002671801695685059759609817610043,
473019390708653635646355717993810374,946037790426207282182712525087720748,
1793065570951424563465415149185451397,9724611390366570207119656739941055368,
18360112889743139324140413370872219647,93051340697074543466533548169693326028,
175113680393259077032968095249297641067,935260473335849946263739047642383952638,
1771519856582590883626388996175758015177,9486628432299589719890269949032347166948,
17983245864609089340879449808954695433797,97716705510589983838683847899601549672768,
184444400021289858677367686898103100434547,929878401323188545441144545880223104879028,
1750856802645277090882289091761546209757957,9348435829096949000705169999487008296338528,
17606772757104799000320240008983917581686967,
94575391329043779004522540108724093309447638,...

s=4:
no period detected 2,4,4,4,1,2,1,3,2,4,4,4,3,1,2,4,3,2,3,2,4,3,4,3,4,1,4,3,2,1,4,3,2,2,1,1,4,1,4,3,4,1,2,3, 2,4,3,4,3,4,1,2,2,3,2,1,2,3,1,2,3,4,3,4,3,4,1,2,2,3,2,1,2,3,1,1,1,4,2,1,4,3,2,4,1,4,3,4, 3,2,1,4,1,4,3,4,1,4,3,2,...



shaft utilization:

    1:  22%  ++++++++++++++++++++++
    2:  24%  ++++++++++++++++++++++++
    3:  24%  ++++++++++++++++++++++++
    4:  30%  ++++++++++++++++++++++++++++++

s=5:
no period detected 2,4,3,1,2,4,5,1,2,4,3,1,2,5,1,2,3,1,3,4,3,2,3,2,3,2,3,2,3,2,3,2,3,1,2,5,1,3,4,4,3,4,5,1, 2,4,4,3,4,5,1,2,4,4,3,4,5,1,3,1,3,4,4,3,4,5,1,2,4,4,3,4,5,1,3,2,5,1,2,3,1,3,4,3,2,3,2,3, 2,3,2,3,2,3,2,3,2,3,2,3,...



shaft utilization:

    1:  15%  +++++++++++++++
    2:  25%  +++++++++++++++++++++++++
    3:  31%  +++++++++++++++++++++++++++++++
    4:  20%  ++++++++++++++++++++
    5:   9%  +++++++++

s=6:
no period detected 2,4,2,4,5,4,5,1,2,4,2,4,5,1,2,4,5,4,5,4,2,1,2,1,2,1,2,1,2,1,2,1,2,4,5,1,2,1,2,1,2,1,2,1, 2,4,5,4,5,4,5,4,2,1,2,1,2,1,5,4,5,4,5,4,5,4,5,4,2,1,2,1,2,1,5,1,5,4,2,1,2,1,2,4,5,4,5,4, 5,4,5,4,5,4,5,4,5,4,5,4,...



shaft utilization:

    1:  22%  ++++++++++++++++++++++
    2:  26%  ++++++++++++++++++++++++++
    3:   0%  
    4:  28%  ++++++++++++++++++++++++++++
    5:  24%  ++++++++++++++++++++++++
    6:   0%  

s=7:
no period detected 2,4,1,2,7,7,3,5,3,6,5,3,7,1,2,4,3,6,5,5,2,5,5,1,2,7,7,5,1,2,2,2,7,6,6,4,3,4,7,1,3,2,1,3, 3,4,1,3,7,1,4,3,4,7,3,1,1,5,1,4,6,1,7,2,6,5,1,7,6,1,7,1,6,3,7,6,7,6,5,4,5,1,4,7,5,1,4,7, 4,1,6,6,3,3,7,3,4,7,5,2,...



shaft utilization:

    1:  18%  ++++++++++++++++++
    2:  11%  +++++++++++
    3:  15%  +++++++++++++++
    4:  13%  +++++++++++++
    5:  13%  +++++++++++++
    6:  12%  ++++++++++++
    7:  18%  ++++++++++++++++++

s=8:
no period detected 2,4,8,8,5,2,5,7,6,4,8,8,3,1,6,4,3,6,3,6,8,7,4,3,4,5,8,3,6,1,4,3,6,2,1,5,4,5,4,3,4,1,2,7, 6,8,3,8,3,8,5,2,2,7,2,1,6,3,5,6,7,8,7,4,3,8,5,6,6,7,6,5,2,7,1,5,5,4,6,1,8,3,6,4,5,8,7,4, 3,6,1,4,5,8,3,4,5,8,7,6,...



shaft utilization:

    1:   8%  ++++++++
    2:   8%  ++++++++
    3:  14%  ++++++++++++++
    4:  15%  +++++++++++++++
    5:  14%  ++++++++++++++
    6:  16%  ++++++++++++++++
    7:  10%  ++++++++++
    8:  15%  +++++++++++++++

s=9:
period = 6; pre-periodic length = 0 [2,4,8,7,5,1] ...



shaft utilization:

    1:  16%  ++++++++++++++++
    2:  17%  +++++++++++++++++
    3:   0%  
    4:  17%  +++++++++++++++++
    5:  16%  ++++++++++++++++
    6:   0%  
    7:  17%  +++++++++++++++++
    8:  17%  +++++++++++++++++
    9:   0%  

s=10:
no period detected 2,4,8,6,7,4,5,1,2,4,8,6,7,5,6,2,3,6,3,4,8,7,8,7,8,7,8,7,8,7,8,7,8,6,7,5,6,3,4,9,8,9,10,1, 2,4,9,8,9,10,1,2,4,9,8,9,10,1,3,6,3,4,9,8,9,10,1,2,4,9,8,9,10,1,3,7,5,6,2,3,6,3,4,8,7,8, 7,8,7,8,7,8,7,8,7,8,7,8,7,8,...



shaft utilization:

    1:   6%  ++++++
    2:   7%  +++++++
    3:   8%  ++++++++
    4:  10%  ++++++++++
    5:   4%  ++++
    6:   9%  +++++++++
    7:  18%  ++++++++++++++++++
    8:  23%  +++++++++++++++++++++++
    9:  10%  ++++++++++
   10:   5%  +++++

s=11:
period = 1; pre-periodic length = 4 2,4,8,5,[11] ...



shaft utilization:

    1:   0%  
    2:   1%  +
    3:   0%  
    4:   1%  +
    5:   1%  +
    6:   0%  
    7:   0%  
    8:   1%  +
    9:   0%  
   10:   0%  
   11:  96%  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

s=12:
no period detected 2,4,8,4,5,10,5,7,2,4,8,4,11,1,2,4,11,10,11,10,8,7,8,7,8,1,8,7,2,1,8,7,2,10,5,1,8,1,8,7,8, 1,2,7,2,4,11,4,11,4,5,10,2,7,2,1,2,7,5,10,11,4,11,4,11,4,5,10,2,7,2,1,2,7,5,1,5,4,2,1,8, 7,2,4,5,4,11,4,11,10,5,4,5,4,11,4,5,4,11,10,...



shaft utilization:

    1:  10%  ++++++++++
    2:  15%  +++++++++++++++
    3:   0%  
    4:  19%  +++++++++++++++++++
    5:  12%  ++++++++++++
    6:   0%  
    7:  12%  ++++++++++++
    8:  11%  +++++++++++
    9:   0%  
   10:   9%  +++++++++
   11:  12%  ++++++++++++
   12:   0%  

s=13:
no period detected 2,4,8,3,12,11,7,6,12,11,9,5,7,10,12,11,3,6,12,7,2,3,13,10,13,3,7,8,4,8,9,11,13,1,1,7,8,1, 7,10,3,8,1,3,13,9,5,9,4,2,9,11,3,11,11,3,1,10,13,9,11,3,3,9,2,6,8,12,13,13,9,7,2,9,8,3,1, 13,6,10,6,5,6,1,11,2,11,1,9,13,1,10,1,5,7,11,2,2,13,7,...



shaft utilization:

    1:  10%  ++++++++++
    2:   8%  ++++++++
    3:  11%  +++++++++++
    4:   3%  +++
    5:   4%  ++++
    6:   6%  ++++++
    7:   9%  +++++++++
    8:   7%  +++++++
    9:  10%  ++++++++++
   10:   6%  ++++++
   11:  11%  +++++++++++
   12:   5%  +++++
   13:  10%  ++++++++++

s=14:
no period detected 2,4,8,2,7,14,3,5,10,6,12,10,7,1,2,4,3,6,5,12,2,5,12,1,2,7,14,5,8,9,2,9,14,6,13,11,10,11, 14,1,10,9,8,3,10,4,1,10,7,8,11,10,4,7,10,1,8,5,1,4,13,8,7,2,13,12,1,14,6,1,14,1,6,3,7,13, 7,6,12,11,12,1,4,14,5,8,11,14,11,8,13,6,3,10,7,10,11,14,5,2,...



shaft utilization:

    1:  10%  ++++++++++
    2:   8%  ++++++++
    3:   5%  +++++
    4:   6%  ++++++
    5:   7%  +++++++
    6:   7%  +++++++
    7:   9%  +++++++++
    8:   8%  ++++++++
    9:   3%  +++
   10:  10%  ++++++++++
   11:   7%  +++++++
   12:   6%  ++++++
   13:   5%  +++++
   14:   9%  +++++++++

s=15:
no period detected 2,4,8,1,2,4,5,1,2,4,8,1,2,10,11,7,8,1,8,4,8,7,8,7,8,7,8,7,8,7,8,7,8,1,2,10,11,13,14,4,8, 4,5,1,2,4,14,13,14,10,11,7,14,4,8,4,5,1,8,1,8,4,14,13,14,10,11,7,14,4,8,4,5,1,8,7,5,1,2, 13,11,13,14,13,2,13,2,13,2,13,2,13,2,13,2,13,2,13,2,13,...



shaft utilization:

    1:  10%  ++++++++++
    2:  15%  +++++++++++++++
    3:   0%  
    4:  12%  ++++++++++++
    5:   5%  +++++
    6:   0%  
    7:  10%  ++++++++++
    8:  17%  +++++++++++++++++
    9:   0%  
   10:   4%  ++++
   11:   5%  +++++
   12:   0%  
   13:  14%  ++++++++++++++
   14:   8%  ++++++++
   15:   0%  

s=16:
no period detected 2,4,8,16,13,10,13,7,14,12,8,16,11,9,14,12,3,6,3,6,8,15,4,11,12,5,8,11,14,9,4,3,14,2,9,13, 12,5,4,3,12,1,10,7,6,16,3,8,11,8,13,10,2,15,2,1,6,11,5,14,15,8,7,4,3,8,5,6,14,7,14,13,2, 7,9,13,13,4,14,9,16,11,6,12,5,8,15,12,11,14,9,4,5,16,3,4,5,16,7,6,...



shaft utilization:

    1:   2%  ++
    2:   5%  +++++
    3:   7%  +++++++
    4:   8%  ++++++++
    5:   7%  +++++++
    6:   7%  +++++++
    7:   6%  ++++++
    8:   9%  +++++++++
    9:   6%  ++++++
   10:   3%  +++
   11:   7%  +++++++
   12:   7%  +++++++
   13:   7%  +++++++
   14:   9%  +++++++++
   15:   4%  ++++
   16:   6%  ++++++

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e-mail: ralph@cs.arizona.edu

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