OFFSET
1,1
COMMENTS
The digits in {1,3,7,9} are the possible ending digits of multidigit primes. [Corrected by Lekraj Beedassy, Apr 04 2009]
Subsequence of A091633. - Michel Marcus, Jun 08 2014
LINKS
Alois P. Heinz, Table of n, a(n) for n = 1..10000
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Rick L. Shepherd, Jun 01 2005
STATUS
approved