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 A302036 #17 Jul 21 2021 00:45:06 %S A302036 1,2,3,4,5,7,8,9,11,13,16,17,19,21,23,25,29,31,32,37,41,43,45,47,49, %T A302036 53,55,61,64,67,71,73,77,83,85,89,91,93,97,101,107,109,115,119,121, %U A302036 127,128,131,143,145,149,151,157,161,167,173,175,179,181,189,191,193,197,205,209,211,221,223,227,229,233,235,239,247,253,256,257 %N A302036 Ludic powers: numbers k such that A302031(k) < 2; numbers k such that A260739(k) is a power of 2. %C A302036 An analog of A000961 for factorization process based on the Ludic sieve (A255127). %C A302036 Numbers k for which A302031(k) < 2, or equally, for which A302034(k) = 1, or equally, for which A209229(A260739(k)) = 1. %H A302036 Antti Karttunen, <a href="/A302036/b302036.txt">Table of n, a(n) for n = 1..3600</a> %H A302036 <a href="/index/Si#sieve">Index entries for sequences generated by sieves</a> %o A302036 (PARI) for(n=1,257,if(A302031(n)<2,print1(n,","))); \\ See also code in A302031. %Y A302036 Cf. A260739, A302031, A302034. %Y A302036 Cf. A000079, A003309, A254100 (subsequences). %Y A302036 Cf. also A000961, A302038, A302040. %K A302036 nonn %O A302036 1,2 %A A302036 _Antti Karttunen_, Apr 02 2018