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 A025122 #3 Mar 30 2012 18:56:01 %S A025122 10,14,55,76,165,202,365,422,682,781,1144,1278,1782,1974,2620,2857, %T A025122 3685,3974,5005,5378,6607,7042,8519,9020,10768,11380,13382,14075, %U A025122 16388,17207,19815,20724,23689,24698,28038,29200,32889,34161,38272,39710,44210,45770 %N A025122 s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n-k+1), where k = [ n/2 ], s = A001950 (upper Wythoff sequence). %K A025122 nonn %O A025122 1,1 %A A025122 _Clark Kimberling_