OFFSET
1,1
COMMENTS
Values associated with 16, 109, 116 and 232 certified prime with Primo. These primes have lengths 27, 353, 382 and 900 digits, respectively.
a(10)-a(11) associated with probable primes. - Robert Price, Aug 23 2014
a(12) > 15300. - Robert Price, Aug 23 2014
EXAMPLE
(5!)^2 - prime(5) = 120^2 - 11 = 14400 - 11 = 14389 is prime, so 5 is a term.
PROG
(PARI) for(n=1, 800, if(isprime((n!)^2-prime(n)), print1(n, ", ")))
CROSSREFS
KEYWORD
nonn,more,hard
AUTHOR
Rick L. Shepherd, Jun 25 2002
EXTENSIONS
a(10)-a(11) from Robert Price, Aug 23 2014
STATUS
approved