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A142061 Primes congruent to 20 mod 33. 2
53, 251, 317, 383, 449, 647, 911, 977, 1109, 1307, 1373, 1439, 1571, 1637, 1901, 2099, 2297, 2693, 2957, 3023, 3089, 3221, 3617, 3881, 3947, 4013, 4079, 4211, 4409, 4673, 4871, 4937, 5003, 5333, 5399, 5531, 5861, 5927, 6257, 6323, 6389, 6521, 6653, 6719 (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) ~ 20n log n. - Charles R Greathouse IV, Jul 02 2016

MATHEMATICA

Select[Range[20, 20000, 33], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Jun 25 2011 *)

Select[Prime[Range[3000]], MemberQ[{20}, Mod[#, 33]]&] (* Vincenzo Librandi, Aug 18 2012 *)

PROG

(MAGMA) [p: p in PrimesUpTo(8000) | p mod 33 eq 20 ]; // Vincenzo Librandi, Aug 18 2012

(PARI) is(n)=isprime(n) && n%33==20 \\ Charles R Greathouse IV, Jul 02 2016

CROSSREFS

Cf. A000040.

Sequence in context: A084669 A256339 A142357 * A107150 A036911 A241488

Adjacent sequences:  A142058 A142059 A142060 * A142062 A142063 A142064

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jul 11 2008

STATUS

approved

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Last modified July 22 07:23 EDT 2019. Contains 325216 sequences. (Running on oeis4.)