OFFSET
1,3
COMMENTS
No more terms up to k=4000.
PROG
(PARI) is(n)=ispseudoprime(3+10^n+3*100^n) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn,hard,more,changed
AUTHOR
Jason Earls, Dec 04 2009
EXTENSIONS
Offset changed to 1 by Georg Fischer, Jan 03 2021
a(11)-a(13) from Michael S. Branicky, May 12 2023
a(14)-a(15) from Michael S. Branicky, Oct 31 2024
STATUS
approved