OFFSET
1,1
LINKS
Jinyuan Wang, Table of n, a(n) for n = 1..125
EXAMPLE
10130211 = 3^3*7^2*13*19*31 has no prime factors == -1 (mod 6), so 10130211 is a term.
CROSSREFS
KEYWORD
nonn
AUTHOR
Pierre CAMI, Dec 27 2007; corrected Jan 02 2008, Jan 09 2008
EXTENSIONS
Several missing terms inserted by Michel Marcus, Sep 15 2019
Several missing terms inserted by Jinyuan Wang, Mar 06 2020
STATUS
approved