A244737 - OEIS

%I #14 Apr 21 2021 04:26:05

%S 2,5,6,9,11,13,14,16,18,20,21,23,26,27,30,32,36,38,40,42,43,44,47,48,

%T 51,53,54,56,58,60,61,62,64,65,67,71,74,76,79,82,83,84,86,89,90,94,96,

%U 98,99,100,103,105,108,110,112,115,116,117,119,121,122,124

%N Numbers k such that (prime(k) mod 5) is odd.

%C Complement of A244736.

%H Clark Kimberling, <a href="/A244737/b244737.txt">Table of n, a(n) for n = 1..1000</a>

%e k    prime(k)  mod 5  mod 2

%e 1       2        2      0

%e 2       3        3      1

%e 3       5        0      0

%e 4       7        2      0

%e 5      11        1      1

%e 6      13        3      1

%t z = 300; u = Mod[Table[Mod[Prime[n], 5], {n, 1, z}], 2] (* A244735 *)

%t Flatten[Position[u, 0]]  (* A244736 *)

%t Flatten[Position[u, 1]]  (* A244737 *)

%Y Cf. A039703, A244735, A244736.

%K nonn,easy

%O 1,1

%A _Clark Kimberling_, Jul 05 2014