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A142447 Primes congruent to 39 mod 49. 1
137, 431, 823, 1019, 1117, 1607, 1901, 1999, 2293, 3371, 3469, 4057, 4253, 4547, 5233, 5527, 5821, 6311, 6703, 6899, 6997, 7193, 7487, 7879, 8369, 8467, 8663, 8761, 9349, 9643, 9839, 10133, 10427, 11113, 11701, 11897, 12289, 12583, 13171, 13367, 13759 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

FORMULA

a(n) ~ 42n log n. - Charles R Greathouse IV, Jul 03 2016

MATHEMATICA

Select[Prime[Range[1700]], Mod[#, 49]==39&]  (* Harvey P. Dale, Apr 01 2011 *)

Select[Prime[Range[2500]], MemberQ[{39}, Mod[#, 49]] &] (* Vincenzo Librandi, Aug 28 2012 *)

PROG

(MAGMA) [p: p in PrimesUpTo(17000) | p mod 49 eq 39]; // Vincenzo Librandi, Aug 28 2012

(PARI) is(n)=isprime(n) && n%49==39 \\ Charles R Greathouse IV, Jul 03 2016

CROSSREFS

Cf. A000040.

Sequence in context: A307839 A307840 A142211 * A142620 A188127 A142813

Adjacent sequences:  A142444 A142445 A142446 * A142448 A142449 A142450

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jul 11 2008

STATUS

approved

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Last modified November 21 22:16 EST 2019. Contains 329383 sequences. (Running on oeis4.)