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A090865 Primes p such that (p-1)/2 is prime if p==3 (mod 4) or (p-1)/4 is prime if p==1 (mod 4). 1
7, 11, 13, 23, 29, 47, 53, 59, 83, 107, 149, 167, 173, 179, 227, 263, 269, 293, 317, 347, 359, 383, 389, 467, 479, 503, 509, 557, 563, 587, 653, 719, 773, 797, 839, 863, 887, 983, 1019, 1109, 1187, 1229, 1283, 1307, 1319, 1367, 1439, 1487, 1493, 1523, 1619 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Cf. A005385.

Sequence in context: A163388 A155760 A058500 * A191062 A106079 A045459

Adjacent sequences:  A090862 A090863 A090864 * A090866 A090867 A090868

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 12 2004

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Last modified February 15 08:20 EST 2012. Contains 205729 sequences.