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A125822
Numbers k for which 8*k + 1 and 8*k + 3 are twin primes.
9
2, 5, 17, 35, 65, 71, 77, 80, 101, 107, 110, 131, 161, 185, 212, 215, 260, 266, 332, 341, 350, 371, 407, 416, 491, 500, 506, 527, 530, 542, 560, 581, 590, 626, 677, 680, 707, 731, 761, 806, 821, 836, 845, 932
OFFSET
1,1
LINKS
MATHEMATICA
Do[If[PrimeQ[8n + 1] && PrimeQ[8n + 3], Print[n]], {n, 1, 1000}]
Select[Range[1000], AllTrue[8#+{1, 3}, PrimeQ]&] (* Harvey P. Dale, Jul 11 2023 *)
CROSSREFS
Sequence in context: A066649 A075345 A045705 * A025537 A245784 A247068
KEYWORD
nonn
AUTHOR
Artur Jasinski, Dec 10 2006
STATUS
approved