OFFSET
1,2
COMMENTS
There is a strong conjecture that numbers n >= 3 appear in A336957 if and only if they are divisible by at least two different primes.
LINKS
Scott R. Shannon, Table of n, a(n) for n = 1..20000
CROSSREFS
KEYWORD
sign
AUTHOR
Scott R. Shannon and N. J. A. Sloane, Aug 13 2020
STATUS
approved