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A142189
Primes congruent to 17 mod 40.
1
17, 97, 137, 257, 337, 457, 577, 617, 857, 937, 977, 1097, 1217, 1297, 1657, 1697, 1777, 2017, 2137, 2297, 2377, 2417, 2617, 2657, 2777, 2857, 2897, 3137, 3217, 3257, 3457, 3617, 3697, 4057, 4177, 4217, 4297, 4337, 4457, 4657, 4817, 4937, 5297, 5417, 5657
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 16n log n. - Charles R Greathouse IV, Jul 03 2016
MATHEMATICA
Select[Prime[Range[2000]], MemberQ[{17}, Mod[#, 40]]&] (* Vincenzo Librandi, Aug 20 2012 *)
Select[Range[17, 6000, 40], PrimeQ] (* Harvey P. Dale, Oct 02 2022 *)
PROG
(Magma) [p: p in PrimesUpTo(7000) | p mod 40 eq 17]; // Vincenzo Librandi, Aug 20 2012
(PARI) is(n)=isprime(n) && n%40==17 \\ Charles R Greathouse IV, Jul 03 2016
CROSSREFS
Cf. A000040.
Sequence in context: A094407 A131204 A070186 * A325068 A264823 A081593
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved