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 A113087 #3 Mar 30 2012 18:36:51
%S A113087 1,2,8,68,1252,51724,5000468,1176844012,696653833108,1063944196415276,
%T A113087 4273738134967763028,45828521528368595280876,
%U A113087 1327368163105850592309345044,104832927462400739554960944906668
%N A113087 Row sums of triangle A113084, which satisfies the recurrence: A113084(n,k) = [A113084^3](n-1,k-1) + [A113084^3](n-1,k).
%o A113087 (PARI) {a(n)=local(M=matrix(n+1,n+1));for(r=1,n+1, for(c=1,r, M[r,c]=if(r==c,1,if(c>1,(M^3)[r-1,c-1])+(M^3)[r-1,c]))); return(sum(k=1,n+1,M[n+1,k]))}
%Y A113087 Cf. A113084.
%K A113087 nonn
%O A113087 0,2
%A A113087 _Paul D. Hanna_, Oct 14 2005