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 A024885 #3 Mar 30 2012 18:56:00 %S A024885 0,0,3,5,8,13,21,34,68,110,178,288,466,754,1220,1974,3283,5312,8595, %T A024885 13907,22502,36409,58911,95320,154231,249551,404769,654930,1059699, %U A024885 1714629,2774328,4488957,7263285 %N A024885 s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023531, t = (F(2), F(3), F(4), ...). %K A024885 nonn %O A024885 2,3 %A A024885 _Clark Kimberling_