A142619 Primes congruent to 26 mod 55.

191, 521, 631, 1181, 1291, 1511, 1621, 1951, 2281, 3271, 3491, 3821, 3931, 4261, 4481, 4591, 5471, 5581, 5801, 6131, 6571, 6791, 7121, 7451, 7561, 8111, 8221, 9431, 9871, 10091, 10531, 10861, 11411, 12071, 12401, 12511, 12841, 13171, 13721, 13831, 14051

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 03 2016

Mathematica

Select[Prime[Range[1700]], Mod[#, 55]==26&] (* Harvey P. Dale, Sep 20 2011 *)
Select[Prime[Range[2500]], MemberQ[{26}, Mod[#, 55]] &] (* Vincenzo Librandi, Aug 31 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(16000) | p mod 55 eq 26]; // Vincenzo Librandi, Aug 31 2012
(PARI) is(n)=isprime(n) && n%55==26 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040.

Sequence in context: A147116 A142677 A142562 * A337791 A347294 A086878

Adjacent sequences: A142616 A142617 A142618 * A142620 A142621 A142622

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved