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A142420 Primes congruent to 8 mod 49. 1
449, 547, 743, 1429, 1723, 2017, 2213, 2311, 2801, 3389, 4271, 4663, 4957, 5153, 5741, 5839, 6133, 6329, 6427, 6917, 7211, 7309, 7603, 8093, 8191, 8387, 8681, 8779, 9661, 9857, 10151, 10739, 10837, 11131, 11621, 11719, 12503, 12601, 13679, 14071, 14561 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, 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[2500]], MemberQ[{8}, Mod[#, 49]] &] (* Vincenzo Librandi, Aug 27 2012 *)

Select[Range[8, 15000, 49], PrimeQ] (* Harvey P. Dale, Sep 14 2014 *)

PROG

(MAGMA) [p: p in PrimesUpTo(16000) | p mod 49 eq 8]; // Vincenzo Librandi, Aug 27 2012

(PARI) is(n)=isprime(n) && n%49==8 \\ Charles R Greathouse IV, Jul 03 2016

CROSSREFS

Cf. A000040.

Sequence in context: A087700 A107666 A020466 * A319060 A105376 A325083

Adjacent sequences:  A142417 A142418 A142419 * A142421 A142422 A142423

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jul 11 2008

STATUS

approved

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Last modified June 1 19:32 EDT 2020. Contains 334762 sequences. (Running on oeis4.)