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 A332212 #14 Feb 09 2020 20:12:52 %S A332212 1,2,3,4,7,6,5,8,9,14,31,12,11,10,21,16,127,18,13,28,15,62,17,24,49, %T A332212 22,27,20,19,42,23,32,93,254,35,36,29,26,33,56,8191,30,37,124,63,34, %U A332212 41,48,25,98,381,44,43,54,217,40,39,38,131071,84,47,46,45,64,77,186,524287,508,51,70,53,72,59,58,147,52,155,66,61,112,81,16382,67,60 %N A332212 Fully multiplicative with a(p) = A332211(A000720(p)). %H A332212 Antti Karttunen, <a href="/A332212/b332212.txt">Table of n, a(n) for n = 1..29662</a> %H A332212 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A332212 a(1) = 1, a(p^e) = A332211(A000720(p))^e, a(m*n) = a(m)*a(n). %o A332212 (PARI) %o A332212 \\ Needs also code from A332211: %o A332212 A332212(n) = { my(f=factor(n)); f[,1] = apply(A332211,apply(primepi,f[,1])); factorback(f); }; %Y A332212 Cf. A000043, A000668, A000720, A332211, A332213 (inverse permutation), A332214. %K A332212 nonn,mult %O A332212 1,2 %A A332212 _Antti Karttunen_, Feb 09 2020