OFFSET
1,19
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..65537
MATHEMATICA
a[n_] := IntegerExponent[EulerPhi[n], 3]; Array[a, 100] (* Amiram Eldar, May 17 2022 *)
PROG
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, May 17 2022
STATUS
approved