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 A029646 #8 Jun 22 2013 16:05:36 %S A029646 1,1,1,1,5,1,1,7,1,27,1,9,35,77,1,1,11,1,65,1,13,77,275,1,935,1,15, %T A029646 1287,2717,1,119,1729,7007,1,17,135,665,2275,5733,11011,16445,1,1,19, %U A029646 1,189,1,21,209,1311,1,7125,1,23,8645,32319,1,275,10395,127281,1,25,299,2277 %N A029646 Odd numbers to the left of the central elements of the (1,2)-Pascal triangle A029635. %K A029646 nonn %O A029646 0,5 %A A029646 _Mohammad K. Azarian_ %E A029646 More terms from _David W. Wilson_