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 A102919 #3 Mar 30 2012 18:36:44
%S A102919 1,3,8,24,95,472,3010,22508,198157,1969757,22006039,272436985,
%T A102919 3691859826,54696947677,872698586012,15055534230363,276756250035637,
%U A102919 5449734493500830,113510195694700702,2512765185249336397
%N A102919 Row sums of triangle A102916.
%o A102919 (PARI) {T(n,k)=if(n<k,0,if(n==k,k+1, polcoeff(k+1-sum(i=k,n-1,T(i,k)*x^i*prod(j=1,(i-k)\2+1,1-(j+k)*x+x*O(x^n))),n)))} \ /* A102916 */ {a(n)=sum(k=0,n,T(n,k))}
%Y A102919 Cf. A102916.
%K A102919 nonn
%O A102919 0,2
%A A102919 _Paul D. Hanna_, Jan 21 2005