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 A028272 #8 Jul 02 2025 16:01:55 %S A028272 4,5,13,6,19,7,45,26,8,71,34,9,161,105,43,10,266,148,53,11,588,414, %T A028272 201,64,12,1002,615,265,76,13,2178,1617,880,341,89,14,3795,2497,1221, %U A028272 430,103,15,8151,6292,3718,1651,533,118,16,14443,10010,5369,2184,651,134 %N A028272 Elements to right of central elements in 3-Pascal triangle A028262 that are not 1. %K A028272 nonn,easy %O A028272 0,1 %A A028272 _Mohammad K. Azarian_ %E A028272 More terms from _James Sellers_