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 A113082 #3 Mar 30 2012 18:36:51
%S A113082 1,1,10,331,33476,10204145,9378590446,26026690264407,
%T A113082 218132378185337416,5518274388618175447069,
%U A113082 421034872020570533423509010,96809747319527667989371938562883
%N A113082 Main diagonal of square table A113081; also, a(n) equals the n-th term in column 0 of the matrix n-th power of triangle A113084.
%o A113082 (PARI) {a(n,q=3)=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((M^n)[n+1,1])}
%Y A113082 Cf. A113081, A113084.
%K A113082 nonn
%O A113082 0,3
%A A113082 _Paul D. Hanna_, Oct 14 2005