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 A024864 #3 Mar 30 2012 18:56:00 %S A024864 5,7,24,33,71,87,153,177,279,319,465,519,717,794,1052,1147,1473,1588, %T A024864 1989,2136,2620,2792,3367,3565,4239,4479,5260,5531,6426,6746,7764, %U A024864 8120,9269,9663,10950,11402,12835,13330,14917,15477,17226,17833,19752,20408,22504,23235 %N A024864 s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers), t = A001950 (upper Wythoff sequence). %K A024864 nonn %O A024864 2,1 %A A024864 _Clark Kimberling_