OFFSET
1,2
COMMENTS
The Mersenne primes A000668 are a subsequence.
EXAMPLE
1023 is in this sequence because 1023 = 3*11*31 and 1023*2^9 divides 1571328 which is the sum of divisors of 1023*2^9.
CROSSREFS
KEYWORD
nonn
AUTHOR
Peter Luschny, Oct 13 2018
STATUS
approved