OFFSET
1,1
COMMENTS
a(22) > 2575. - Jinyuan Wang, Feb 03 2020
LINKS
MATHEMATICA
fQ[n_] := PrimeQ[9 n! - 1]; k = 0; lst = {}; While[k < 1501, If[ fQ@k, AppendTo[lst, k]; Print@k]; k++ ]; lst
PROG
(PARI) is(k) = ispseudoprime(9*k!-1); \\ Jinyuan Wang, Feb 03 2020
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Robert G. Wilson v, Sep 13 2010
EXTENSIONS
a(21) from Jinyuan Wang, Feb 03 2020
a(22)-a(23) from Michael S. Branicky, Apr 25 2023
a(24) from Michael S. Branicky, Nov 02 2024
STATUS
approved