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 A025124 #3 Mar 30 2012 18:56:01 %S A025124 2,2,5,2,7,14,24,24,35,32,45,42,57,55,72,70,90,113,137,134,160,157, %T A025124 185,183,214,212,245,242,279,276,314,312,353,349,390,385,429,475,525, %U A025124 522,574,571,625,623,680,677,737,734,797,794,859,857,924,922,990,984,1055,1049,1121 %N A025124 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A001950 (upper Wythoff sequence), t = A014306. %K A025124 nonn %O A025124 1,1 %A A025124 _Clark Kimberling_