A142237 Primes congruent to 40 mod 41.

163, 409, 491, 983, 1229, 1721, 2131, 2213, 2377, 2459, 3361, 3607, 3853, 4099, 4591, 4673, 4919, 5657, 5821, 5903, 6067, 7297, 7789, 8117, 8363, 8527, 8609, 9511, 9839, 10331, 10987, 11069, 11807, 11971, 12791, 13037, 13693, 14431, 14759, 14923, 15497

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 02 2016

Mathematica

Select[Prime[Range[5000]], MemberQ[{40}, Mod[#, 41]]&] (* Vincenzo Librandi, Aug 24 2012 *)
Select[Range[40, 16000, 41], PrimeQ] (* Harvey P. Dale, Oct 11 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(17000) | p mod 41 eq 40 ]; // Vincenzo Librandi, Aug 24 2012
(PARI) is(n)=isprime(n) && n%41==40 \\ Charles R Greathouse IV, Jul 02 2016

Crossrefs

Cf. A000040.

Sequence in context: A157952 A306931 A142427 * A142283 A357600 A038552

Adjacent sequences: A142234 A142235 A142236 * A142238 A142239 A142240

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved