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A142430 Primes congruent to 19 mod 49. 1
19, 313, 509, 607, 1097, 1489, 1783, 1979, 2273, 2371, 2861, 3253, 3449, 3547, 4723, 4919, 5507, 5801, 6389, 6781, 6977, 7369, 8447, 8741, 8839, 9133, 9623, 9721, 10211, 10799, 11093, 11681, 11779, 12073, 12269, 13151, 13249, 14033, 14327, 14621, 15013 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 42n log n. - Charles R Greathouse IV, Jul 03 2016
MATHEMATICA
Select[Prime[Range[2500]], MemberQ[{19}, Mod[#, 49]] &] (* Vincenzo Librandi, Aug 28 2012 *)
Select[Range[19, 16000, 49], PrimeQ] (* Harvey P. Dale, Aug 13 2017 *)
PROG
(Magma) [p: p in PrimesUpTo(17000) | p mod 49 eq 19]; // Vincenzo Librandi, Aug 28 2012
(PARI) is(n)=isprime(n) && n%49==19 \\ Charles R Greathouse IV, Jul 03 2016
CROSSREFS
Cf. A000040.
Sequence in context: A182460 A370318 A032631 * A180845 A138943 A111420
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved

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Last modified March 28 16:58 EDT 2024. Contains 371254 sequences. (Running on oeis4.)