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 A024376 #4 Mar 30 2012 18:55:54 %S A024376 0,1,1,0,2,1,2,3,3,2,4,3,4,5,5,5,5,6,6,6,8,7,8,9,9,9,9,10,10,10,11,11, %T A024376 13,12,12,13,13,13,15,14,15,15,17,16,17,17,18,19,19,19,20,20,20,21,21, %U A024376 20,22,21,22,23,24,23,24,25,25,25,26,26,28,27,28,28,29,29,31,30,31,31,32,32,33,34,34,33 %N A024376 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = A023532, t = A014306. %K A024376 nonn %O A024376 1,5 %A A024376 _Clark Kimberling_