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 A106263 #2 Mar 30 2012 18:59:07
%S A106263 1,1,3,4,5,8,12,11,16,16,28,27,36,34,45,53,60,60,66,72,86,104,111,95,
%T A106263 119,109,161,182,185,161,175,169,199,210,249,258,310,248,340,332,356,
%U A106263 297,370,352,424,428,465,502,500,450,547,590,613,588,630,569,595,630
%N A106263 Row sums of number triangle A106262.
%F A106263 a(n)=sum{k=0..n, (2^(n-k) mod k+2)}
%K A106263 easy,nonn
%O A106263 0,3
%A A106263 _Paul Barry_, Apr 28 2005