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 A029645 #11 Dec 15 2014 23:37:43 %S A029645 4,5,6,14,7,20,8,27,50,9,35,77,10,44,112,182,11,54,156,294,12,65,210, %T A029645 450,672,13,77,275,660,1122,14,90,352,935,1782,2508,15,104,442,1287, %U A029645 2717,4290,16,119,546,1729,4004,7007,9438,17,135,665,2275,5733,11011,16445,18 %N A029645 Numbers to the left of the central elements of the (1,2)-Pascal triangle A029635 that are different from 1. %K A029645 nonn %O A029645 0,1 %A A029645 _Mohammad K. Azarian_ %E A029645 More terms from _David W. Wilson_