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A072599 Numbers n such that (n!)^2 - p(n) is prime. 1
3, 4, 5, 6, 7, 16, 109, 116, 232 (list; graph; refs; listen; history; internal format)
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.

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

Cf. A064769 (n such that (n!)^2 + p(n) is prime).

Sequence in context: A052002 A070916 A078305 * A095138 A026475 A101747

Adjacent sequences:  A072596 A072597 A072598 * A072600 A072601 A072602

KEYWORD

nonn

AUTHOR

Rick L. Shepherd (rshepherd2(AT)hotmail.com), Jun 25 2002

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Last modified February 16 09:00 EST 2012. Contains 205904 sequences.