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 A024368 #4 Mar 30 2012 18:55:54 %S A024368 1,3,4,7,15,25,47,76,123,199,340,550,919,1487,2453,3969,6422,10391, %T A024368 16936,27403,44538,72064,116924,189187,306632,496141,802773,1298914, %U A024368 2103051,3402808,5508066,8912238 %N A024368 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = A023532, t = (Lucas numbers). %K A024368 nonn %O A024368 1,2 %A A024368 _Clark Kimberling_