A142605 Primes congruent to 6 mod 55.

61, 281, 941, 1051, 1381, 1601, 1931, 2371, 2591, 3251, 3361, 3581, 3691, 3911, 4021, 4241, 5011, 5231, 6221, 6551, 6661, 6991, 7211, 7321, 7541, 8311, 8641, 8861, 8971, 9521, 9631, 9851, 10181, 11171, 11831, 11941, 12161, 12491, 12601, 12821, 13151, 13591

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Formula

a(n) ~ 40n log n. - Charles R Greathouse IV, Jul 04 2016

Mathematica

Select[Prime[Range[2500]], MemberQ[{6}, Mod[#, 55]] &] (* Vincenzo Librandi, Aug 31 2012 *)
Select[Range[6, 14000, 55], PrimeQ] (* Harvey P. Dale, Feb 20 2018 *)

Prog

(Magma) [p: p in PrimesUpTo(16000) | p mod 55 eq 6]; // Vincenzo Librandi, Aug 31 2012
(PARI) is(n)=isprime(n) && n%55==6 \\ Charles R Greathouse IV, Jul 04 2016

Crossrefs

Cf. A000040.

Sequence in context: A302282 A140854 A091912 * A142133 A302730 A234036

Adjacent sequences: A142602 A142603 A142604 * A142606 A142607 A142608

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved