OFFSET
1,2
COMMENTS
No further terms < 100000. - Ray Chandler, Aug 03 2011
LINKS
Henri & Renaud Lifchitz, PRP Records.
MATHEMATICA
Do[ f = 23^n + 2; If[ PrimeQ[ f ], Print[ {n, f} ] ], {n, 1, 323} ]
PROG
(PARI) is(n)=ispseudoprime(23^n+2) \\ Charles R Greathouse IV, Feb 17 2017
KEYWORD
nonn,more
AUTHOR
Alexander Adamchuk, Mar 02 2008
EXTENSIONS
a(5)-a(7) from Ray Chandler, Aug 01 2011
STATUS
approved