OFFSET
1,10
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..65537
FORMULA
If gcd(n,sigma(n)) = n, then a(n) = 0, otherwise a(n) = 1 + a(gcd(n,sigma(n))).
a(n) < A326196(n).
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Aug 24 2019
STATUS
approved