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 A366284 #10 Oct 07 2023 21:39:33 %S A366284 0,1,1,1,1,5,1,7,1,1,5,11,1,13,7,15,1,17,1,19,5,7,11,23,1,1,13,27,7, %T A366284 29,15,31,1,11,17,7,1,37,19,13,5,41,7,43,11,15,23,47,1,49,1,51,13,53, %U A366284 27,1,7,57,29,59,15,61,31,63,1,65,11,67,17,23,7,71,1,73,37,5,19,11,13,79,5,27,41,83,7,17,43,29,11 %N A366284 a(n) = n / gcd(n, A366275(n)), where A366275 is the Cat's tongue permutation. %C A366284 Numerator of n / A366275(n). %H A366284 Antti Karttunen, <a href="/A366284/b366284.txt">Table of n, a(n) for n = 0..16383</a> %H A366284 <a href="/index/Bi#binary">Index entries for sequences related to binary expansion of n</a> %F A366284 a(n) = n / A366283(n) = n / gcd(n, A366275(n)) %o A366284 (PARI) A366284(n) = (n/gcd(n,A366275(n))); \\ Uses the program given in A366275. %Y A366284 Cf. A057889, A163511, A366275, A366282, A366283, A366285 (denominators), A366286. %Y A366284 Cf. also A364491. %K A366284 nonn,frac %O A366284 0,6 %A A366284 _Antti Karttunen_, Oct 07 2023