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 A136472 #2 Mar 30 2012 18:37:08
%S A136472 1,8,136,6552,973832,465833856,739387804752,3992649623654752,
%T A136472 74888425049167499424,4962998789388515787006336,
%U A136472 1178375010889854741001146703936,1013755301703927988518902015091910656
%N A136472 Column 2 of triangle A136470 (scaled): a(n) = A136470(n+2,2)/4^n.
%C A136472 Triangle T = A136470 is defined by: column 0 of T^m = {C(m*2^n, n), n>=0}.
%o A136472 (PARI) {a(n)=local(M=matrix(n+3,n+3,r,c,binomial(r*2^(c-1),c-1)),P); P=matrix(n+3,n+3,r,c,binomial((r+1)*2^(c-1),c-1));(P~*M~^-1)[n+3,3]/4^n}
%Y A136472 Cf. A136470; A136471.
%K A136472 nonn
%O A136472 0,2
%A A136472 _Paul D. Hanna_, Jan 01 2008