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Search: id:A091568
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A091568 Primes of the form p^2-p-1, where p is prime. +0
8
5, 19, 41, 109, 271, 811, 929, 2161, 3659, 4421, 4969, 9311, 10099, 16001, 17029, 19181, 22051, 32579, 38611, 57839, 72091, 93941, 109229, 128521, 143261, 157211, 166871, 175141, 176819, 201151, 208391, 228961, 236681, 240589, 358201, 367841 (list; graph; listen)
OFFSET

1,1

MATHEMATICA

lst={}; Do[p=Prime[n]; p=p^2-p-1; If[PrimeQ[p], AppendTo[lst, p]], {n, 3*5!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 27 2009]

CROSSREFS

Cf. A091567 (p such that p^2-p-1 prime).

Sequence in context: A100572 A119534 A033622 this_sequence A147307 A089148 A098319

Adjacent sequences: A091565 A091566 A091567 this_sequence A091569 A091570 A091571

KEYWORD

nonn

AUTHOR

T. D. Noe (noe(AT)sspectra.com), Jan 21 2004

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.


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