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 A025076 #3 Mar 30 2012 18:56:01 %S A025076 1,1,0,1,1,2,3,3,2,3,3,3,5,4,5,5,6,6,6,7,7,7,9,8,9,9,10,9,10,10,11,12, %T A025076 12,11,13,12,13,15,14,14,15,16,16,16,17,17,19,18,19,19,20,20,21,20,20, %U A025076 21,21,21,23,23,23,23,25,24,25,25,26,28,27,27,28,28,29,30,30,30,31,31,32,32,34,33,33,34 %N A025076 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023532, t = A014306. %K A025076 nonn %O A025076 1,6 %A A025076 _Clark Kimberling_