A049508 Numbers k such that prime(k) == 3 (mod 10).

2, 6, 9, 14, 16, 21, 23, 27, 30, 38, 40, 44, 48, 51, 56, 61, 62, 65, 71, 74, 76, 84, 86, 90, 96, 99, 103, 108, 112, 117, 119, 122, 124, 130, 132, 137, 143, 147, 150, 153, 162, 166, 170, 174, 179, 183, 185, 188, 191, 192, 196, 198, 200, 208, 213, 220, 224, 227, 231

Offset

1,1

Comments

The asymptotic density of this sequence is 1/4 (by Dirichlet's theorem). - Amiram Eldar, Mar 01 2021

Links

Table of n, a(n) for n=1..59.

Formula

a(n) = A000720(A030431(n)). - Ray Chandler, Nov 07 2006

Mathematica

Select[Range[240], Mod[Prime[ # ], 10] == 3 &] (* Ray Chandler, Nov 07 2006 *)

Crossrefs

Cf. A000720, A030431, A102338.

Cf. A049509, A049510, A049511.

Sequence in context: A226823 A171866 A297833 * A184824 A184836 A327895

Adjacent sequences: A049505 A049506 A049507 * A049509 A049510 A049511

Keyword

easy,nonn

Author

J. Lowell

Extensions

Edited and extended by Ray Chandler, Nov 07 2006

Status

approved