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 A068044 #8 Sep 08 2022 13:14:10 %S A068044 1,1,1,1,1,1,1,1,3,14,37,71,129,253,511,1024,2048,4096,8192,16384, %T A068044 32768,65536,131072,262144,524288,1048576,2097152,4194304,8388608, %U A068044 16777216,33554432,67108864,134217728,268435456,536870912,1073741824 %N A068044 Number of subsets of {1,2,3,...,n} that sum to 0 mod 32. %H A068044 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (2). %F A068044 G.f.: -(2*x^15+5*x^14-5*x^13-13*x^12-3*x^11+9*x^10+8*x^9+x^8-x^7-x^6-x^5-x^4-x^3-x^2-x+1) / (2*x-1). _Colin Barker_, Dec 23 2012 %Y A068044 32nd row of A068009. %K A068044 nonn,easy %O A068044 0,9 %A A068044 _Antti Karttunen_, Feb 11 2002