A138249 - OEIS

A138249

Prime numbers k such that 24*k - 1, 24*k + 1 are twin primes.

3, 13, 43, 67, 113, 157, 283, 337, 503, 823, 883, 1123, 1217, 1327, 1483, 1583, 1597, 1607, 1613, 1753, 1973, 2017, 2027, 2083, 2383, 2423, 2467, 2803, 3067, 3203, 3343, 3797, 3917, 3923, 4057, 4217, 4337, 4397, 4903, 4987, 5387, 5443, 5477, 5807, 5953

(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*24 - 1 = 71 (prime), 3*24 + 1 = 73 (prime).

MATHEMATICA

a=24; Select[Prime[Range[250]], PrimeQ[a*#-1]&&PrimeQ[a*#+1] &]

PROG

(Magma) [n: n in [0..10000] |IsPrime(n) and IsPrime(24*n-1)and IsPrime(24*n+1)] // Vincenzo Librandi, Aug 03 2010

CROSSREFS