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A141950
Primes congruent to 4 mod 27.
1
31, 139, 193, 409, 463, 571, 733, 787, 1327, 1381, 1489, 1543, 1597, 1759, 1867, 2029, 2083, 2137, 2677, 2731, 3001, 3109, 3163, 3217, 3271, 3433, 3541, 3919, 4027, 4243, 4297, 4513, 4567, 4621, 4729, 4783, 4999, 5107, 5323, 5431, 5647, 5701, 6079, 6133
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 18n log n. - Charles R Greathouse IV, Jul 03 2016
MATHEMATICA
Select[Prime[Range[800]], MemberQ[{4}, Mod[#, 27]] &] (* Vincenzo Librandi, Aug 16 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(7000) | p mod 27 eq 4 ]; // Vincenzo Librandi, Aug 16 2012
(PARI) is(n)=isprime(n) && n%27==4 \\ Charles R Greathouse IV, Jul 03 2016
CROSSREFS
Cf. A000040,
Sequence in context: A123236 A142561 A165568 * A201960 A182916 A233303
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved