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A067664 Numbers n such that n^2+1 and n^2+n+1 are primes. +0
1
1, 2, 6, 14, 20, 24, 54, 66, 90, 110, 150, 176, 206, 236, 314, 584, 644, 686, 696, 860, 864, 890, 920, 950, 960, 1070, 1146, 1274, 1314, 1340, 1434, 1440, 1494, 1566, 1616, 1644, 1676, 1700, 1716, 1970, 1974, 2054, 2064, 2136, 2360, 2430, 2456, 2604, 2646 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Cf. A005574, A002384.

Sequence in context: A139269 A140525 A032643 this_sequence A130800 A067262 A107369

Adjacent sequences: A067661 A067662 A067663 this_sequence A067665 A067666 A067667

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 23 2002

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.


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