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 A035280 #5 Aug 13 2020 14:01:06 %S A035280 1,2,4,6,6,8,9,12,12,12,15,15,16,18,18,20,21,24,24,24,27,28,30,30,32, %T A035280 33,35,36 %N A035280 Smallest of largest of n distinct numbers around circle so that every 2 neighbors x,y have x|y or y|x. %H A035280 E. J. Friedman, <a href="https://erich-friedman.github.io/mathmagic/1198.html">Math. Magic</a> %Y A035280 Cf. A034298. %K A035280 nonn %O A035280 1,2 %A A035280 _Erich Friedman_