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 A185626 #5 Mar 30 2012 18:37:25
%S A185626 1,2,7,28,142,913,7244,69004,771359,9933242,145148660,2376879719,
%T A185626 43167728519,861914166441,18779307089740,443624137266205,
%U A185626 11299168270825627,308780443524256478,9014690419440269085,280081388252523565158,9229143937723290061482
%N A185626 Column 1 of triangle A185624.
%C A185626 Triangle A185624 equals the matrix square of triangle R = A185620, which satisfies: R^3 - R^2 + I = R shifted left one column.
%o A185626 (PARI) {a(n)=local(A=Mat(1), B); for(m=1, n+1, B=A^3-A^2+A^0; A=matrix(m+1, m+1); for(i=1, m+1, for(j=1, i, if(i<2|j==i, A[i, j]=1, if(j==1, A[i, j]=1, A[i, j]=B[i-1, j-1]))))); return((A^2)[n+2, 2])}
%Y A185626 Cf. A185620, A185624, A185625, A185627, A185628.
%K A185626 nonn
%O A185626 0,2
%A A185626 _Paul D. Hanna_, Sep 07 2011