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Search: id:A064769
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| A064769 |
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Numbers n such that (n!)^2 + p(n) is prime. |
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+0
2
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OFFSET
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1,2
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COMMENT
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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
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EXAMPLE
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(5!)^2 + prime(5) = 120^2 + 11 = 14400 + 11 = 14411 is prime, so 5 is a term.
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PROGRAM
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(PARI) for(n=1, 300, if(isprime((n!)^2+prime(n)), print(n)))
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CROSSREFS
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Cf. A046029, A072599 (n such that (n!)^2 - p(n) is prime).
Sequence in context: A110113 A137155 A014227 this_sequence A119002 A047021 A047031
Adjacent sequences: A064766 A064767 A064768 this_sequence A064770 A064771 A064772
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KEYWORD
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nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Oct 18 2001
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EXTENSIONS
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1720 from Ryan Propper (rpropper(AT)stanford.edu), Nov 05 2005
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