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 A169743 #6 Jul 06 2025 17:04:50 %S A169743 1,2,4,5,8,10,11,16,20,22,23,32,37,40,43,44,46,47,64,71,74,79,80,86, %T A169743 88,89,92,94,95,128,133,139,142,145,148,151,158,160,163,172,175,176, %U A169743 178,179,184,188,190,191,256,263,266,278,283,284,290,295,296,302,307,316,319,320 %N A169743 Numbers k such that A109671(k) = 1. %C A169743 If m is a term so is 2m. %Y A169743 Cf. A109671, A169744, A169745. %K A169743 nonn %O A169743 1,2 %A A169743 _N. J. A. Sloane_, May 02 2010