OFFSET
1,1
COMMENTS
Numbers such that the multiplicities of prime factors of the forms 3m+1 (A002476) and 3m-1 (A003627) are equal modulo 3, and some of the former has exponent of the form 3k+2, or some of the latter has odd exponent.
If m and n are in the sequence and gcd(m,n)=1, then m*n is also in sequence.
Term k is included <=> term 3*k is included.
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..12000
PROG
(PARI) isA374223 = A374222;
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jul 08 2024
STATUS
approved