OFFSET
1,1
COMMENTS
a(19) > 10^13. - Giovanni Resta, Jun 27 2018
EXAMPLE
a(4)=13 since 13 is the fourth prime in A068947.
CROSSREFS
KEYWORD
more,nonn,base
AUTHOR
Francois Jooste (phukraut(AT)hotmail.com), Mar 15 2002
EXTENSIONS
a(16)-a(17) from Sean A. Irvine, Jun 07 2011
a(18) from Giovanni Resta, Jun 27 2018
STATUS
approved