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A123980 Numbers n for which 8n+1, 8n+5 and 8n+7 are primes. 0
12, 24, 57, 162, 234, 249, 267, 297, 432, 519, 564, 717, 969, 984, 1167, 1179, 1389, 1734, 2007, 2364, 2427, 2544, 2664, 2769, 2784, 3582, 3627, 3819, 3897, 4089, 4287, 5244, 5307, 5337, 5472, 5577, 5667, 5727, 5967, 6084, 6102, 6399, 6522, 6822, 6987 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..45.

MATHEMATICA

Select[Range[7000], And @@ PrimeQ /@ ({1, 5, 7} + 8#) &] (* Ray Chandler, Nov 05 2006 *)

CROSSREFS

Cf. A005122, A005123, A005124, A105133.

Sequence in context: A080495 A090776 A247944 * A097704 A289132 A098585

Adjacent sequences:  A123977 A123978 A123979 * A123981 A123982 A123983

KEYWORD

nonn

AUTHOR

Artur Jasinski, Oct 30 2006

EXTENSIONS

Extended by Ray Chandler, Nov 05 2006

STATUS

approved

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Last modified December 12 01:57 EST 2019. Contains 329948 sequences. (Running on oeis4.)