A201541 Numbers n such that 12n+5 and 12n+7 are primes.

0, 1, 2, 3, 8, 11, 12, 16, 22, 23, 38, 43, 47, 51, 53, 67, 68, 71, 73, 87, 88, 102, 106, 107, 108, 123, 141, 143, 156, 162, 166, 173, 177, 178, 186, 192, 198, 212, 221, 227, 232, 233, 247, 271, 277, 282, 288, 296, 298, 318, 326, 327, 333, 337, 346, 351, 352

Offset

0,3

Comments

A123979 and A123985 are subsequences.

Links

Table of n, a(n) for n=0..56.

Formula

a(n)=(A123986(n)-1)/3.

Mathematica

Select[Range[0, 352], PrimeQ[12 # + 5] && PrimeQ[12 # + 7] &] (* T. D. Noe, Dec 05 2011 *)

Crossrefs

Cf. A123985, A123986, A123979.

Sequence in context: A354756 A361324 A118089 * A084917 A134713 A293910

Adjacent sequences: A201538 A201539 A201540 * A201542 A201543 A201544

Keyword

nonn

Author

Zak Seidov, Dec 02 2011

Status

approved