A124520 - OEIS

A124520

Numbers k such that 14*k - 1 and 14*k + 1 are twin primes.

3, 30, 33, 63, 75, 78, 93, 102, 123, 138, 153, 162, 165, 192, 195, 240, 252, 273, 297, 303, 342, 387, 393, 420, 435, 438, 450, 468, 483, 522, 525, 540, 588, 630, 633, 660, 663, 717, 738, 747, 750, 765, 798, 825, 837, 855, 957, 978, 993, 1023, 1032, 1062

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

OFFSET

1,1

LINKS

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

EXAMPLE

3 is in the sequence since 14*3 - 1 = 41 and 14*3 + 1 = 43 are twin primes.

MATHEMATICA

Select[Range[1100], And @@ PrimeQ[{-1, 1} + 14# ] &] (* Ray Chandler, Nov 16 2006 *)

CROSSREFS

Cf. A040040, A045753, A002822, A124065, A124518, A124519, A124521, A124522, A063983.

Sequence in context: A077679 A045863 A121023 * A350814 A169966 A140153