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 A163530 #3 Mar 31 2012 13:21:18 %S A163530 0,1,2,3,2,1,2,3,4,5,6,7,6,5,4,3,4,5,6,7,8,9,8,7,8,9,10,11,10,9,10,11, %T A163530 12,13,12,11,10,9,8,7,8,9,8,7,6,5,4,3,4,5,6,7,6,5,6,7,8,9,8,7,8,9,10, %U A163530 11,12,13,12,11,10,9,10,11,12,13,14,15,14,13,14,15,16,17,18,19,18,17 %N A163530 a(n) = A163528(n)+A163529(n). %H A163530 A. Karttunen, <a href="/A163530/b163530.txt">Table of n, a(n) for n = 0..59048</a> %Y A163530 See also: A059261, A059285, A163531. %K A163530 nonn %O A163530 0,3 %A A163530 _Antti Karttunen_, Aug 01 2009