OFFSET

1,1

COMMENTS

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

EXAMPLE

CROSSREFS

KEYWORD

nonn

AUTHOR

Michel Marcus, Jul 05 2012

EXTENSIONS

a(7) corrected and a(8)-a(9) added by Michel Marcus, Jun 18 2016

STATUS

approved