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A100712 Numbers n such that n*(n-1)-1 and n*(n+1)+1 are both primes. +0
1
3, 5, 6, 12, 14, 17, 20, 21, 27, 54, 57, 66, 69, 71, 77, 90, 101, 131, 141, 150, 155, 161, 164, 189, 192, 194, 231, 245, 266, 332, 336, 344, 351, 381, 392, 402, 434, 456, 476, 495, 500, 512, 531, 551, 572, 579, 582, 605, 626, 671, 677, 696, 747, 762, 782, 839 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Sequence in context: A145714 A047443 A127577 this_sequence A086187 A088082 A139013

Adjacent sequences: A100709 A100710 A100711 this_sequence A100713 A100714 A100715

KEYWORD

easy,nonn

AUTHOR

Pierre CAMI (pierrecami(AT)tele2.fr), Dec 10 2004

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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