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 A115192 #2 Oct 12 2012 14:40:25 %S A115192 1,1093,22417,333244,4380151,54231244,649940212,7643456248, %T A115192 88872211096,1026178892443,11798983030675,135327222190240, %U A115192 1550024200441495,17743256268685240,203091320580519760,2325213813771735940 %N A115192 Sixth diagonal (M=6) of triangle A115154 (called Y(3,1)). %F A115192 a(n)= A115154(n+5,n+1), n>=0. %F A115192 G.f.: ((-3+36*x-81*x^2+ 2*x^5) + 3*(1-15*x+54*x^2-27*x^3)*c(3*x))/((2+x)*x^5), with the o.g.f. c(x) of A000108 (Catalan). %K A115192 nonn,easy %O A115192 0,2 %A A115192 _Wolfdieter Lang_, Feb 23 2006