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A145489 Numbers k such that 6k + 11 is prime and 12k + 5 is also prime. 1
0, 1, 2, 3, 7, 8, 12, 16, 21, 23, 26, 37, 38, 42, 43, 47, 51, 56, 58, 63, 68, 73, 78, 91, 92, 98, 101, 106, 107, 108, 133, 136, 141, 142, 156, 157, 162, 173, 192, 196, 201, 203, 212, 218, 227, 233, 236, 238, 246, 247, 257, 267, 268, 271, 287, 296, 306, 313, 316, 323, 327, 332, 346, 353, 357, 366, 367, 371, 376, 387, 401, 406, 411, 423, 441, 442, 448, 453, 471, 472, 478, 483, 488, 491, 498 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Ivan Neretin, Table of n, a(n) for n = 1..10000

FORMULA

a(n) = (A145475(n) - 5)/12.

MATHEMATICA

Select[Range[0, 500], PrimeQ[6# + 11 ] && PrimeQ[12# + 5]&]

PROG

(PARI) isok(n) = isprime(6*n+11) && isprime(12*n+5); \\ Michel Marcus, Jan 24 2017

CROSSREFS

Cf. A063908-A063913, A092109, A145471-A145490.

Sequence in context: A281018 A184860 A242655 * A003307 A105601 A199971

Adjacent sequences:  A145486 A145487 A145488 * A145490 A145491 A145492

KEYWORD

nonn

AUTHOR

Artur Jasinski, Oct 11 2008

EXTENSIONS

Corrected by Artur Jasinski, Apr 01 2011

STATUS

approved

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Last modified July 16 04:26 EDT 2019. Contains 325064 sequences. (Running on oeis4.)