A142197 Primes congruent to 37 mod 40.

37, 157, 197, 277, 317, 397, 557, 677, 757, 797, 877, 997, 1117, 1237, 1277, 1597, 1637, 1877, 1997, 2237, 2357, 2437, 2477, 2557, 2677, 2797, 2837, 2917, 2957, 3037, 3517, 3557, 3637, 3677, 3797, 3877, 3917, 4157, 4357, 4397, 4517, 4597, 4637, 4877, 4957

Offset

1,1

Links

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

Formula

a(n) ~ 16n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Prime[Range[2000]], MemberQ[{37}, Mod[#, 40]]&] (* Vincenzo Librandi, Aug 22 2012 *)
Select[Range[37, 5000, 40], PrimeQ] (* Harvey P. Dale, Jan 04 2022 *)

Prog

(Magma) [p: p in PrimesUpTo(7000) | p mod 40 eq 37 ]; // Vincenzo Librandi, Aug 22 2012
(PARI) is(n)=isprime(n) && n%40==37 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A379871 A250942 A250943 * A140011 A296156 A250842

Adjacent sequences: A142194 A142195 A142196 * A142198 A142199 A142200

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved