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

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

Cf. A001097, A001359, A006512.

Sequence in context: A093923 A163182 A267455 * A181604 A084476 A289413

Adjacent sequences: A138246 A138247 A138248 * A138250 A138251 A138252

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, May 05 2008

Status

approved