A142020 Primes congruent to 16 mod 31.

47, 109, 233, 419, 853, 977, 1039, 1163, 1597, 1721, 1783, 1907, 2341, 2713, 2837, 3023, 3209, 3271, 3457, 3581, 3643, 3767, 4139, 4201, 4759, 5441, 5503, 5689, 5813, 6247, 6619, 6991, 7177, 7487, 7549, 7673, 8231, 8293, 9161, 9533, 9719, 9781, 9967, 10091

Offset

1,1

Links

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

Formula

a(n) ~ 30n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Range[16, 20000, 31], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Apr 30 2011 *)

Prog

(Magma) [p: p in PrimesUpTo(12000) | p mod 31 eq 16 ]; // Vincenzo Librandi, Aug 17 2012
(PARI) is(n)=isprime(n) && n%31==16 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040, A142005, A142006, A142019.

Sequence in context: A308784 A142796 A201147 * A044234 A044615 A142057

Adjacent sequences: A142017 A142018 A142019 * A142021 A142022 A142023

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved