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 A025114 #3 Mar 30 2012 18:56:01 %S A025114 5,7,31,43,104,128,240,278,456,523,784,876,1236,1371,1846,2015,2620, %T A025114 2827,3577,3845,4756,5071,6159,6524,7804,8250,9739,10245,11957,12557, %U A025114 14510,15180,17389,18133,20613,21470,24237,25177,28247,29314,32703,33862,37585,38840 %N A025114 s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (odd natural numbers), t = A001950 (upper Wythoff sequence). %K A025114 nonn %O A025114 1,1 %A A025114 _Clark Kimberling_