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Search: id:A068038
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| A068038 |
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Number of subsets of {1,2,3,...,n} that sum to 0 mod 17. |
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+0
2
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| 1, 1, 1, 1, 1, 1, 3, 8, 15, 30, 60, 120, 241, 482, 964, 1928, 3856, 7712, 15422, 30842, 61682, 123362, 246722, 493446, 986896, 1973790, 3947580, 7895160, 15790320, 31580642, 63161284, 126322568, 252645136, 505290272, 1010580544, 2021161084
(list; graph; listen)
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OFFSET
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0,7
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PROGRAM
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(PARI) {A068038(n)=local(v, v1); v=vector(17); v[1]=1; for(i=1, n, v1=vector(17); for(j=0, 16, v1[j+1]=v[j+1]+v[(j-i)%17+1]); v=v1); v[1]} (Max Alekseyev (maxal(AT)cs.ucsd.edu), Jul 23 2005))
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CROSSREFS
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17th row of A068009.
Sequence in context: A015631 A116686 A135350 this_sequence A090741 A032234 A032255
Adjacent sequences: A068035 A068036 A068037 this_sequence A068039 A068040 A068041
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KEYWORD
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nonn
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AUTHOR
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Antti Karttunen, Feb 11 2002
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EXTENSIONS
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Rechecked by Max Alekseyev, maxal(AT)cs.ucsd.edu, Jul 23 2005
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