OFFSET
1,3
LINKS
Rémy Sigrist, Table of n, a(n) for n = 1..2500
EXAMPLE
The first terms, alongside phi(n), are:
n a(n) phi(n)
-- ---- ------
1 1 1
2 1 1
3 2 2
4 1 2
5 4 4
6 2 2
7 12 6
8 3 4
9 18 6
10 72 4
PROG
(PARI) for (n=1, 48, print1 (v=if (n==1, 1, v%e=eulerphi(n), v*e, v/e) ", "))
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, Sep 13 2019
STATUS
approved