A142161 Primes congruent to 4 mod 39.

43, 199, 277, 433, 823, 1213, 1291, 1447, 1759, 1993, 2383, 2539, 2617, 2851, 3163, 3319, 3631, 3709, 3943, 4021, 4099, 4177, 4567, 4723, 4801, 4957, 5113, 5347, 5503, 5581, 5659, 5737, 6361, 6673, 6829, 6907, 7219, 7297, 7687, 8233, 8311, 8389, 8467, 8623

Offset

1,1

Links

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

Formula

a(n) ~ 24n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Prime[Range[3000]], MemberQ[{4}, Mod[#, 39]]&] (* Vincenzo Librandi, Aug 19 2012 *)
Select[Range[4, 9000, 39], PrimeQ] (* Harvey P. Dale, Oct 09 2015 *)

Prog

(Magma) [p: p in PrimesUpTo(9000) | p mod 39 eq 4 ]; // Vincenzo Librandi, Aug 19 2012
(PARI) is(n)=isprime(n) && n%39==4 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A342509 A145650 A142527 * A193144 A142659 A140041

Adjacent sequences: A142158 A142159 A142160 * A142162 A142163 A142164

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved