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 A291166 #15 Feb 16 2025 08:33:50 %S A291166 1,3,5,6,7,9,11,12,13,14,15,17,18,19,20,21,22,23,24,25,26,27,28,29,30, %T A291166 31,33,35,37,38,39,41,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58, %U A291166 59,60,61,62,63,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81 %N A291166 Connected Haar graph numbers. %C A291166 Complement of A291165. %C A291166 These appear to be numbers whose positions of 1's in their reversed binary expansion are relatively prime. If so, this sequence lists all positions of 1's in A326674. Numbers whose positions of 1's in their reversed binary expansion are pairwise coprime (as opposed to relatively prime) are A326675. - _Gus Wiseman_, Jul 19 2019 %H A291166 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ConnectedGraph.html">Connected Graph</a> %H A291166 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HaarGraph.html">Haar Graph</a> %Y A291166 Cf. A000120, A029931, A048793, A059519, A070939, A289508, A291165, A295235, A319826, A326031, A326669, A326672, A326673. %K A291166 nonn %O A291166 1,2 %A A291166 _Eric W. Weisstein_, Aug 19 2017