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 A053217 #6 Oct 27 2023 22:00:45 %S A053217 7,11,15,17,18,22,24,25,29,30,32,33,35,36,39,40,41,42,44,45,47,48,51, %T A053217 52,53,54,56,57,58,59,61,62,64,65,67,68,69,70,72,73,74,75,76,77,79,80, %U A053217 82,83,85,86,87,88,89,91,92,93,94,95,96,97,99,100,101,102,103,105,106 %N A053217 Numbers that do not occur in A001156. %Y A053217 Cf. A001156, A053216. %K A053217 nonn,easy %O A053217 1,1 %A A053217 _Asher Auel_, Dec 27 1999