A142190 Primes congruent to 19 mod 40.

19, 59, 139, 179, 379, 419, 499, 619, 659, 739, 859, 1019, 1259, 1459, 1499, 1579, 1619, 1699, 1979, 2099, 2179, 2339, 2459, 2539, 2579, 2659, 2699, 2819, 2939, 3019, 3259, 3299, 3499, 3539, 3659, 3739, 3779, 4019, 4099, 4139, 4219, 4259, 4339, 5059, 5099

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 02 2016

Mathematica

Select[Prime[Range[2000]], MemberQ[{19}, Mod[#, 40]]&] (* Vincenzo Librandi, Aug 22 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(6000) | p mod 40 eq 19 ]; // Vincenzo Librandi, Aug 22 2012
(PARI) is(n)=isprime(n) && n%40==19 \\ Charles R Greathouse IV, Jul 02 2016

Crossrefs

Cf. A000040.

Sequence in context: A146351 A139920 A182475 * A236462 A139981 A235705

Adjacent sequences: A142187 A142188 A142189 * A142191 A142192 A142193

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved