OFFSET
1,36
COMMENTS
Number of factorizations of n into factors k > 1 for which A048675(k) is a multiple of three.
LINKS
EXAMPLE
Of the eight divisors of 36 larger than 1, [2, 3, 4, 6, 9, 12, 18, 36], only 6 and 36 are in A332820, and because these allow two different factorizations as 36 = 6*6, we have a(36) = 2.
PROG
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Antti Karttunen, Apr 15 2022
STATUS
approved