A141887 Primes congruent to 19 mod 20.

19, 59, 79, 139, 179, 199, 239, 359, 379, 419, 439, 479, 499, 599, 619, 659, 719, 739, 839, 859, 919, 1019, 1039, 1259, 1279, 1319, 1399, 1439, 1459, 1499, 1559, 1579, 1619, 1699, 1759, 1879, 1979, 1999, 2039, 2099, 2179, 2239, 2339, 2399, 2459, 2539, 2579, 2659

Offset

1,1

Links

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

Mathematica

Select[Range[19, 5000, 20], PrimeQ[#]&] (* Vladimir Joseph Stephan Orlovsky, Mar 31 2011*)

Prog

(Magma) [p: p in PrimesUpTo(3000) | p mod 20 eq 19 ]; // Vincenzo Librandi, Aug 16 2012
(PARI) is(n)=isprime(n) && n%20==19 \\ Charles R Greathouse IV, Jul 01 2016

Crossrefs

Cf. A000040, A105854, A141881, A141882, A141883.

Sequence in context: A041704 A041706 A042619 * A141773 A250024 A031375

Adjacent sequences: A141884 A141885 A141886 * A141888 A141889 A141890

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved