This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A068038 #16 Aug 19 2024 02:02:59
%S A068038 1,1,1,1,1,1,3,8,15,30,60,120,241,482,964,1928,3856,7712,15422,30842,
%T A068038 61682,123362,246722,493446,986896,1973790,3947580,7895160,15790320,
%U A068038 31580642,63161284,126322568,252645136,505290272,1010580544,2021161084
%N A068038 Number of subsets of {1,2,3,...,n} that sum to 0 mod 17.
%F A068038 Empirical G.f.: -(2*x^17-x^12+x^8-2*x^7-x^6+x^5+x^4+x^3+x^2+x-1) / ((2*x-1)*(2*x^17-1)). - _Colin Barker_, Dec 22 2012
%o A068038 (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_, Jul 23 2005
%Y A068038 17th row of A068009.
%K A068038 nonn
%O A068038 0,7
%A A068038 _Antti Karttunen_, Feb 11 2002
%E A068038 Rechecked by _Max Alekseyev_, Jul 23 2005