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 A132059 #2 Mar 31 2012 13:20:14 %S A132059 1,27,925,35069,1406679,58491537,2493656187,108280678092, %T A132059 4768395658314,212335592489544,9540877059969102,431908789303835976, %U A132059 19675192863275361294,901089855844979674068,41459199062515242868098 %N A132059 Alternating row sums of triangle A132057 (s2(8)). %F A132059 a(n)= -sum(A132057(n, m)*(-1)^m, m=1..n), n>=1. %F A132059 G.f.: (-1 +(1-49*x)^(-1/7))/(6+(1-49*x)^(-1/7)). %Y A132059 Cf. A092087 (alternating row sums of s2(7)=A092083). %K A132059 nonn,easy %O A132059 1,2 %A A132059 _Wolfdieter Lang_ Sep 11 2007