OFFSET
1,2
COMMENTS
a(11) > 11200. - Jinyuan Wang, Mar 19 2020
PROG
(PARI) is(n)=ispseudoprime((6^n)*(2^n-1)+1) \\ Charles R Greathouse IV, Jun 13 2017
(Magma) [k: k in [1..300] | IsPrime((6^k)*(2^k-1)+1)]; // Jinyuan Wang, Mar 19 2020
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Pierre CAMI, Oct 12 2004
EXTENSIONS
a(11)-a(13) from Michael S. Branicky, Apr 22 2023
STATUS
approved