A045319 Primes congruent to {1, 2, 3, 4} (mod 5).

2, 3, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• easy

Links

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

Crossrefs

Cf. A000040, A045337.

Programs

Magma

[p: p in PrimesUpTo(400) | p mod 5 in [1, 2, 3, 4]]; // Vincenzo Librandi, Aug 08 2012

Mathematica

Select[Prime[Range[200]],MemberQ[{1,2,3, 4},Mod[#,5]]&] (* Vincenzo Librandi, Aug 08 2012 *)

PARI

a(n)=if(n>2,prime(n),n+1) \\ Charles R Greathouse IV, Jun 29 2015