A142405 Primes congruent to 23 mod 48.

23, 71, 167, 263, 311, 359, 503, 599, 647, 743, 839, 887, 983, 1031, 1223, 1319, 1367, 1511, 1559, 1607, 1847, 2039, 2087, 2423, 2663, 2711, 2903, 2999, 3191, 3527, 3623, 3671, 3719, 3767, 3863, 3911, 4007, 4391, 4583, 4679, 4871, 4919, 4967, 5303, 5351

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[1000]], MemberQ[{23}, Mod[#, 48]] &] (* Vincenzo Librandi, Aug 27 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(6000) | p mod 48 eq 23]; // Vincenzo Librandi, Aug 27 2012
(PARI) is(n)=isprime(n) && n%48==23 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A183012 A319052 A154619 * A139962 A248877 A321356

Adjacent sequences: A142402 A142403 A142404 * A142406 A142407 A142408

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved