

A105854


Primes of the form 20*k + 3.


15



3, 23, 43, 83, 103, 163, 223, 263, 283, 383, 443, 463, 503, 523, 563, 643, 683, 743, 823, 863, 883, 983, 1063, 1103, 1123, 1163, 1223, 1283, 1303, 1423, 1483, 1523, 1543, 1583, 1663, 1723, 1783, 1823, 2003, 2063, 2083, 2143, 2203, 2243, 2383, 2423, 2503, 2543
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OFFSET

1,1


COMMENTS

Cf. A030431: Primes of the form 10*k + 3.


LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000


MATHEMATICA

Select[Range[3, 2003, 20], PrimeQ[ # ]&]


PROG

(Magma) [n: n in PrimesUpTo(2600)  IsDivisibleBy(n3, 20)]; // Bruno Berselli, Apr 05 2011
(Magma) [ a: n in [0..250]  IsPrime(a) where a is 20*n+3 ]; // Vincenzo Librandi, Apr 06 2011


CROSSREFS

Cf. A000040, A030431.
Sequence in context: A117738 A014582 A146142 * A160022 A307530 A187094
Adjacent sequences: A105851 A105852 A105853 * A105855 A105856 A105857


KEYWORD

nonn,easy


AUTHOR

Zak Seidov, May 05 2005


EXTENSIONS

More terms from N. J. A. Sloane, Jul 11 2008


STATUS

approved



