A125822 Numbers k for which 8*k + 1 and 8*k + 3 are twin primes.

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

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

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

Cf. A001109, A125821.

Sequence in context: A066649 A075345 A045705 * A025537 A245784 A247068

Adjacent sequences: A125819 A125820 A125821 * A125823 A125824 A125825

Keyword

nonn

Author

Artur Jasinski, Dec 10 2006

Status

approved