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A064769 Numbers n such that (n!)^2 + p(n) is prime. 1
1, 2, 3, 5, 9, 17, 65, 222, 1720 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

Last three values certified prime with Primo.

Next term, if it exists, is greater than 2700. - Ryan Propper (rpropper(AT)stanford.edu), Nov 05 2005

EXAMPLE

(5!)^2 + prime(5) = 120^2 + 11 = 14400 + 11 = 14411 is prime, so 5 is a term.

PROG

(PARI) for(n=1, 300, if(isprime((n!)^2+prime(n)), print(n)))

CROSSREFS

Cf. A046029, A072599 (n such that (n!)^2 - p(n) is prime).

Sequence in context: A110113 A137155 A014227 * A119002 A047021 A201359

Adjacent sequences:  A064766 A064767 A064768 * A064770 A064771 A064772

KEYWORD

nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Oct 18 2001

EXTENSIONS

1720 from Ryan Propper (rpropper(AT)stanford.edu), Nov 05 2005

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Last modified February 17 19:02 EST 2012. Contains 206079 sequences.