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A142217
Primes congruent to 20 mod 41.
2
61, 307, 389, 881, 1291, 1373, 1619, 1783, 2029, 2111, 2357, 2521, 2767, 3259, 3833, 4079, 4243, 4817, 5227, 5309, 5801, 6047, 6211, 6703, 6949, 7523, 7687, 7933, 8179, 8753, 8999, 9491, 9901, 10639, 11131, 11213, 12197, 12689, 12853, 13099, 13591, 14083
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 40n log n. - Charles R Greathouse IV, Jul 02 2016
MATHEMATICA
Select[Range[20, 30000, 41], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Jun 03 2011 *)
Select[Prime[Range[5000]], MemberQ[{20}, Mod[#, 41]]&] (* Vincenzo Librandi, Aug 23 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(16000) | p mod 41 eq 20 ]; // Vincenzo Librandi, Aug 23 2012
(PARI) is(n)=isprime(n) && n%41==20 \\ Charles R Greathouse IV, Jul 02 2016
CROSSREFS
Sequence in context: A142133 A302730 A234036 * A234029 A142923 A154601
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved