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A141952 Primes congruent to 7 mod 27. 1
7, 61, 223, 277, 331, 439, 547, 601, 709, 1033, 1087, 1249, 1303, 1627, 1789, 1951, 2113, 2221, 2383, 2437, 2707, 3301, 3463, 3517, 3571, 3733, 4003, 4057, 4111, 4219, 4273, 4327, 4597, 4651, 4759, 4813, 5407, 5569, 5623, 5839, 6163, 6217, 6271, 6379, 6703 (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) ~ 18n log n. - Charles R Greathouse IV, Jul 03 2016

MATHEMATICA

Select[Prime[Range[900]], MemberQ[{7}, Mod[#, 27]] &]

(* Vincenzo Librandi, Aug 16 2012 *)

PROG

(MAGMA) [p: p in PrimesUpTo(7000) | p mod 27 eq 7 ]; // Vincenzo Librandi, Aug 16 2012

(PARI) is(n)=isprime(n) && n%27==7 \\ Charles R Greathouse IV, Jul 03 2016

CROSSREFS

Cf. A000040.

Sequence in context: A079672 A173880 A100698 * A289723 A064398 A275878

Adjacent sequences:  A141949 A141950 A141951 * A141953 A141954 A141955

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jul 11 2008

STATUS

approved

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Last modified June 2 09:31 EDT 2020. Contains 334769 sequences. (Running on oeis4.)