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 A113094 #3 Mar 30 2012 18:36:51
%S A113094 1,2,27,1504,330745,289031301,1011348629263,14213347986246578,
%T A113094 802722082112213275116,182118530044524172384716760,
%U A113094 165892108866362877173717099499469
%N A113094 Diagonal of square table A113092; also, a(n) equals the n-th term in column 0 of the matrix (n+1)-th power of triangle A113095.
%o A113094 (PARI) {a(n,q=4)=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^q)[r-1,c-1])+(M^q)[r-1,c]))); return(if(n<1,0,(M^n)[n,1]))}
%Y A113094 Cf. A113092, A113095.
%K A113094 nonn
%O A113094 1,2
%A A113094 _Paul D. Hanna_, Oct 14 2005