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A142301
Primes congruent to 21 mod 44.
1
109, 197, 241, 373, 461, 593, 769, 857, 1033, 1297, 1429, 1693, 1913, 2089, 2221, 2309, 2441, 2617, 2749, 2837, 2969, 3541, 3673, 3761, 4157, 4201, 4289, 4421, 4597, 4729, 4817, 4861, 4993, 5081, 5477, 5521, 5653, 5741, 6269, 6577, 6709, 6841, 7193, 7237
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 20n log n. - Charles R Greathouse IV, Jul 03 2016
MATHEMATICA
Select[Prime[Range[2500]], MemberQ[{21}, Mod[#, 44]]&] (* Vincenzo Librandi, Aug 25 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(8000) | p mod 44 eq 21]; // Vincenzo Librandi, Aug 25 2012
(PARI) is(n)=isprime(n) && n%44==21 \\ Charles R Greathouse IV, Jul 03 2016
CROSSREFS
Cf. A000040.
Sequence in context: A142079 A142224 A054267 * A060978 A061879 A171121
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved