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 A324583 #28 Nov 04 2022 11:26:03 %S A324583 0,1,2,4,5,6,7,8,11,12,13,14,16,17,18,19,22,23,24,26,28,29,30,31,32, %T A324583 34,36,37,38,41,43,44,46,47,48,52,53,54,58,59,60,61,62,64,65,66,67,68, %U A324583 71,72,73,74,76,78,79,82,83,86,88,89,90,92,94,95,96,97,101,102,103,104,106,107,108,109,113,114,116,118,120,121 %N A324583 Numbers k such that k and A276086(k) are coprime, where A276086 is the primorial base exp-function. %C A324583 Numbers k for which A324198(k) = 1. %C A324583 For terms k > 0 it holds that: %C A324583 A000005(A324580(k)) = A000005(k) * A324655(k), %C A324583 A000010(A324580(k)) = A000010(k) * A324650(k), %C A324583 A000203(A324580(k)) = A000203(k) * A324653(k), %C A324583 and similarly for any multiplicative function. %H A324583 Antti Karttunen, <a href="/A324583/b324583.txt">Table of n, a(n) for n = 1..10001</a> %H A324583 <a href="/index/Pri#primorialbase">Index entries for sequences related to primorial base</a> %H A324583 <a href="/index/Pri#primorial_numbers">Index entries for sequences related to primorial numbers</a> %o A324583 (PARI) %o A324583 A276086(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (m); }; %o A324583 A324198(n) = gcd(n,A276086(n)); %o A324583 for(n=0,oo,if(1==A324198(n),print1(n,", "))); %Y A324583 Cf. A324584 (complement), A356162 (characteristic function). %Y A324583 Cf. A276086, A324580, A324650, A324653, A324655. %Y A324583 Some subsequences are: A055932 ⊃ A025487 ⊃ A002182, and also A002110. %Y A324583 Subsequence of A356316. %Y A324583 Positions of 1's in A324198, positions 0's in A351254, A356302 and A356303, positions of fixed points in A351250 and in A356309. %Y A324583 Cf. also A355821, A356311. %K A324583 nonn %O A324583 1,3 %A A324583 _Antti Karttunen_, Mar 10 2019 %E A324583 Initial 0 prepended by _Antti Karttunen_, Nov 03 2022