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 A227481 #11 Oct 11 2013 00:46:02 %S A227481 1,1,1,1,2,1,1,1,2,1,1,1,3,1,1,2,2,1,1,1,2,2,1,1,4,1,1,1,2,1,2,1,2,1, %T A227481 1,2,3,1,1,1,3,1,2,1,2,3,1,1,4,1,1,1,2,1,1,2,3,1,1,1,5,1,1,3,2,1,1,1, %U A227481 2,1,2,1,5,1,1,2,2,2,1,1,4,1,1,1,5,1 %N A227481 Number of squares in row n of the triangle in A069011. %C A227481 a(A074235(n)) = 1; a(A009023(n)) > 1. %H A227481 Reinhard Zumkeller, <a href="/A227481/b227481.txt">Table of n, a(n) for n = 0..1000</a> %F A227481 a(n) = sum(A010052(A069011(n,k)): k=0..n). %o A227481 (Haskell) %o A227481 a227481 = sum . map a010052 . a069011_row %K A227481 nonn %O A227481 0,5 %A A227481 _Reinhard Zumkeller_, Oct 11 2013