cp's OEIS Frontend

A366285 a(n) = A366275(n) / gcd(n, A366275(n)), where A366275 is the Cat's tongue permutation.

%I A366285 #10 Oct 07 2023 21:39:37
%S A366285 1,2,2,1,2,9,1,5,2,3,9,15,1,25,5,7,2,81,3,45,9,25,15,21,1,5,25,35,5,
%T A366285 49,7,11,2,81,81,27,3,225,45,21,9,375,25,105,15,49,21,33,1,625,5,175,
%U A366285 25,245,35,1,5,343,49,77,7,121,11,13,2,729,81,405,81,225,27,189,3,1125,225,21,45,63,21,99,9,625,375,525
%N A366285 a(n) = A366275(n) / gcd(n, A366275(n)), where A366275 is the Cat's tongue permutation.
%C A366285 Denominator of n / A366275(n).
%H A366285 Antti Karttunen, <a href="/A366285/b366285.txt">Table of n, a(n) for n = 0..16383</a>
%H A366285 <a href="/index/Bi#binary">Index entries for sequences related to binary expansion of n</a>
%F A366285 a(n) = A366275(n) / A366283(n) = A366275(n) / gcd(n, A366275(n))
%o A366285 (PARI) A366285(n) = { my(u=A366275(n)); (u/gcd(n,u)); }; \\ Uses the program given in A366275.
%Y A366285 Cf. A057889, A163511, A366275, A366282, A366283, A366284 (numerators), A366286 (rgs-transform).
%Y A366285 Cf. also A364492.
%K A366285 nonn,frac
%O A366285 0,2
%A A366285 _Antti Karttunen_, Oct 07 2023