A139406 - OEIS

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A139406

Numbers k such that 8*k+1 and 8*k+5 are primes.

12, 24, 39, 57, 84, 96, 117, 126, 162, 186, 201, 234, 249, 267, 297, 309, 327, 336, 354, 357, 369, 402, 432, 441, 459, 462, 474, 516, 519, 564, 591, 621, 654, 696, 711, 717, 732, 777, 822, 942, 969, 984, 1011, 1029, 1086, 1092, 1116, 1167, 1179, 1272, 1341

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

MATHEMATICA

a = {}; Do[If[PrimeQ[8 n + 1] && PrimeQ[8 n + 5], AppendTo[a, n]], {n, 1, 1000}]; a

Select[Range[1500], And@@PrimeQ[8 #+{1, 5}]&] (* Harvey P. Dale, Aug 14 2011 *)

CROSSREFS

Cf. A125821, A125822, A139402, A139404, A139405, A139407.

Sequence in context: A335541 A174018 A098242 * A140831 A126855 A102749

Adjacent sequences: A139403 A139404 A139405 * A139407 A139408 A139409

KEYWORD

nonn

AUTHOR

Artur Jasinski, Apr 19 2008

STATUS

approved