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A142437
Primes congruent to 27 mod 49.
1
223, 419, 811, 1301, 1399, 1693, 1889, 1987, 2281, 2477, 3163, 3359, 3457, 3947, 4241, 4339, 5417, 5711, 6299, 6397, 6691, 7573, 7867, 8161, 9043, 9239, 9337, 9533, 9631, 10513, 10709, 11003, 11689, 12277, 12473, 13159, 13649, 14629, 14923, 15217, 15413
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 42n log n. - Charles R Greathouse IV, Jul 03 2016
MATHEMATICA
Select[Prime[Range[2500]], MemberQ[{27}, Mod[#, 49]] &] (* Vincenzo Librandi, Aug 28 2012 *)
Select[Range[27, 16000, 49], PrimeQ] (* Harvey P. Dale, Aug 04 2023 *)
PROG
(Magma) [p: p in PrimesUpTo(17000) | p mod 49 eq 27]; // Vincenzo Librandi, Aug 28 2012
(PARI) is(n)=isprime(n) && n%49==27 \\ Charles R Greathouse IV, Jul 03 2016
CROSSREFS
Cf. A000040.
Sequence in context: A102950 A143801 A118818 * A142773 A096660 A345198
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved