A353563 - OEIS

%I #10 Apr 27 2022 20:01:38

%S 2,2,3,3,9,3,5,9,5,9,45,9,25,5,15,15,225,5,125,15,25,45,1125,15,375,

%T 25,125,25,5625,15,7,225,375,225,625,25,35,125,625,225,315,25,175,375,

%U 625,1125,1575,225,175,375,21,625,7875,125,315,625,35,5625,39375,225,49,7,35,21,875,375,245,21,525,625,2205,625

%N Primorial base exp-function applied to Euler totient function: a(n) = A276086(phi(n)).

%H Antti Karttunen, <a href="/A353563/b353563.txt">Table of n, a(n) for n = 1..10000</a>

%H <a href="/index/Pri#primorialbase">Index entries for sequences related to primorial base</a>

%F a(n) = A276086(A000010(n)).

%o (PARI)

%o A276086(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (m); };

%o A353563(n) = A276086(eulerphi(n));

%Y Cf. A000010, A276086, A353564, A353565.

%Y Cf. also A324650, A332825.

%K nonn,look

%O 1,1

%A _Antti Karttunen_, Apr 27 2022