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 A025116 #3 Mar 30 2012 18:56:01 %S A025116 1,1,3,1,4,9,16,16,24,22,31,29,40,38,51,49,64,81,99,97,116,114,135, %T A025116 133,156,154,179,177,204,202,231,229,260,257,288,284,317,352,389,387, %U A025116 426,424,465,463,506,504,549,547,594,592,641,639,690,688,740,736,789,785,840,836,893 %N A025116 s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (odd natural numbers), t = A014306. %K A025116 nonn %O A025116 1,3 %A A025116 _Clark Kimberling_