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A131530 Numbers n such that n^2-n-1 and n^2-n+1 are twin primes. +0
1
3, 4, 6, 7, 9, 16, 21, 22, 25, 39, 42, 51, 55, 60, 67, 90, 102, 132, 139, 142, 154, 156, 165, 177, 189, 204, 207, 210, 216, 219, 232, 237, 247, 289, 291, 310, 315, 352, 379, 396, 406, 454, 456, 457, 496, 501, 519, 531, 552, 561, 625, 645, 669, 687, 721, 729, 744 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Sequence in context: A127594 A094604 A108654 this_sequence A102093 A135215 A092494

Adjacent sequences: A131527 A131528 A131529 this_sequence A131531 A131532 A131533

KEYWORD

nonn

AUTHOR

Pierre CAMI (pierrecami(AT)tele2.fr), Aug 26 2007

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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