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A142619 Primes congruent to 26 mod 55. 2
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 (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) ~ 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 * A086878 A082445 A108848

Adjacent sequences:  A142616 A142617 A142618 * A142620 A142621 A142622

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jul 11 2008

STATUS

approved

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Last modified July 5 03:05 EDT 2020. Contains 335457 sequences. (Running on oeis4.)