OFFSET
1,4
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..16384
Antti Karttunen, Data supplement: n, a(n) computed for n = 1..65537
FORMULA
a(1) = 0 [as here the degrees of 0 and 1 are considered different].
a(p) = 1 for all primes.
EXAMPLE
For n = 3, 3 is a prime, thus a(3) = 1.
For n = 8 = 2^3, its "degree" is A051903(33) = 3, but A003415(8) = 12 = 2^2 * 3, with degree 2, thus a(8) = 12.
PROG
CROSSREFS
Cf. A328384 (the number of iterations needed to reach such a number).
KEYWORD
nonn
AUTHOR
Antti Karttunen, Oct 14 2019
STATUS
approved