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 A029639 #11 Dec 15 2014 23:37:35 %S A029639 3,5,5,9,7,9,7,25,11,27,55,13,9,35,77,105,91,49,15,17,11,81,19,65,285, %T A029639 21,13,77,275,825,385,121,23,935,2079,25,15,1287,2717,4719,3289,169, %U A029639 27,119,1729,7007,9867,5005,819,29,17,135,665,2275,5733,11011,16445,19305,17875 %N A029639 Odd numbers in the (1,2)-Pascal triangle A029635 that are different from 1. %K A029639 nonn %O A029639 0,1 %A A029639 _Mohammad K. Azarian_ %E A029639 More terms from _David W. Wilson_