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 A102322 #4 Mar 30 2012 18:36:44
%S A102322 0,3,9,72,945,17568,427770,12979080,473981445,20308813128,
%T A102322 1001231706582,55927084380552,3495759750651978,242012640619081152,
%U A102322 18398411206663695732,1524754064472700613328,136890662566189661556525
%N A102322 Column 1 of triangular matrix A102320, which that satisfies: T(n,k) = [T^2](n-1,k) when n>k>=0, with T(n,n) = (2*n+1).
%o A102322 (PARI) {a(n)=local(A=Mat([1,0;1,1]),B); for(m=2,n+1,B=matrix(m,m);for(i=1,m, for(j=1,i, if(j==i,B[i,j]=2*j-1,if(j==1,B[i,j]=(A^2)[i-1,1], B[i,j]=(A^2)[i-1,j]));));A=B);return(A[n+1,2])}
%Y A102322 Cf. A102087, A102320.
%K A102322 nonn
%O A102322 0,2
%A A102322 _Paul D. Hanna_, Jan 05 2005