OFFSET

1,1

COMMENTS

For n>2, instances are known up to 11 (p=31).

By definition, gcd(a(n), A002110(n-1)) = 1. - Michel Marcus, Jan 19 2014

LINKS

Achim Flammenkamp, The Multiply Perfect Numbers Page (for p = 13, 17, 19)

Michel Marcus, Table A214132 and A214133 for n = 1..11

EXAMPLE

CROSSREFS

KEYWORD

hard,more,nonn

AUTHOR

Michel Marcus, Jul 05 2012

STATUS

approved