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 A068045 #8 May 02 2025 15:37:20
%S A068045 1,1,1,1,1,1,1,1,1,1,1,2,21,105,316,705,1297,2181,3837,7596,15962,
%T A068045 32998,66173,131379,261910,524012,1048568,2097228,4194318,8388600,
%U A068045 16777216,33554434,67108864,134217728,268435456,536870912,1073741824,2147483648,4294967296
%N A068045 Number of subsets of {1,2,3,...,n} that sum to 0 mod 64.
%H A068045 Alois P. Heinz, <a href="/A068045/b068045.txt">Table of n, a(n) for n = 0..1000</a>
%H A068045 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (2).
%F A068045 G.f.: (4*x^32 -2*x^31 -16*x^30+36*x^29 +138*x^28 -92*x^27 -544*x^26 -192*x^25 +848*x^24 +967*x^23 -177*x^22 -1074*x^21 -770*x^20 +78*x^19 +525*x^18 +413*x^17 +113*x^16 -73*x^15 -106*x^14 -63*x^13 -17*x^12 +x^10 +x^9 +x^8 +x^7 +x^6 +x^5 +x^4 +x^3 +x^2 +x-1) / (2*x-1). - _Alois P. Heinz_, Jan 18 2014
%Y A068045 64th row of A068009.
%K A068045 nonn,easy
%O A068045 0,12
%A A068045 _Antti Karttunen_, Feb 11 2002