A124192 Numbers k for which 8*k + 3 and 8*k + 5 are twin primes.

0, 1, 7, 13, 22, 28, 43, 52, 82, 103, 127, 136, 178, 181, 202, 208, 223, 241, 253, 283, 292, 406, 412, 421, 433, 442, 481, 502, 511, 532, 568, 598, 616, 637, 706, 733, 766, 787, 832, 847, 853, 868, 901, 913, 916, 943

Offset

1,3

Links

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

Example

0 is a term since 8*0 + 3 = 3 and 8*0 + 5 = 5 are twin primes.

Mathematica

Do[If[PrimeQ[8n + 3] && PrimeQ[8n + 5], Print[n]], {n, 1, 1000}]

Prog

(Magma) [k:k in [0..1000]|IsPrime(8*k+3) and IsPrime(8*k+5)]; // Marius A. Burtea, Dec 19 2019

Crossrefs

Cf. A001109, A125821, A125822.

Sequence in context: A138077 A353206 A288655 * A335277 A034102 A034112

Adjacent sequences: A124189 A124190 A124191 * A124193 A124194 A124195

Keyword

nonn,changed

Author

Artur Jasinski, Dec 10 2006

Extensions

a(1) inserted by Amiram Eldar, Dec 19 2019

Status

approved