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 A022293 #4 Mar 30 2012 18:55:50 %S A022293 1,2,3,4,5,7,8,9,10,11,12,13,14,15,18,19,20,21,22,23,24,25,27,28,29, %T A022293 30,31,32,34,35,36,37,38,39,40,41,43,44,49,52,53,58,59,61,62,63,64,65, %U A022293 66,68,69,70,71,72,73,74,75,76,79,80,81,82,84,85,88,89,90,91,92,93,94,95,96,99 %N A022293 Sequence A022292 divided by 2. %K A022293 nonn %O A022293 0,2 %A A022293 _Clark Kimberling_