A142609 Primes congruent to 12 mod 55.

67, 397, 617, 727, 947, 1277, 1607, 2267, 2377, 2707, 2927, 3037, 3257, 3697, 3917, 4027, 4357, 5237, 5347, 5897, 6007, 6337, 6997, 7547, 7877, 8317, 8537, 8647, 8867, 9857, 9967, 10627, 10847, 10957, 11177, 11287, 11617, 12277, 12497, 13267, 13487, 13597

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Formula

a(n) ~ 40n log n. - Charles R Greathouse IV, Jul 04 2016

Mathematica

Select[Prime[Range[2500]], MemberQ[{12}, Mod[#, 55]] &] (* Vincenzo Librandi, Aug 31 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(16000) | p mod 55 eq 12]; // Vincenzo Librandi, Aug 31 2012
(PARI) is(n)=isprime(n) && n%55==12 \\ Charles R Greathouse IV, Jul 04 2016

Crossrefs

Cf. A000040.

Sequence in context: A012865 A026911 A142371 * A262344 A323577 A142735

Adjacent sequences: A142606 A142607 A142608 * A142610 A142611 A142612

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved