A031383 - OEIS

%I #17 Sep 08 2022 08:44:50

%S 17,53,97,139,191,239,283,349,401,457,509,577,631,683,751,821,877,941,

%T 1009,1061,1117,1193,1259,1307,1409,1459,1523,1583,1637,1721,1787,

%U 1871,1933,2003,2081,2137,2221,2287,2351,2411,2477,2579,2659

%N a(n) = prime(9*n - 2).

%H Ivan Panchenko, <a href="/A031383/b031383.txt">Table of n, a(n) for n = 1..1000</a>

%e a(1) = 17 because 9 * 1 - 2 = 7 and the 7th prime is 17.

%e a(2) = 53 because 9 * 2 - 2 = 16 and the 16th prime is 53.

%t Table[Prime[9n - 2], {n, 45}] (* _Alonso del Arte_, Apr 08 2011 *)

%o (Magma)  [ NthPrime(9*n-2): n in [1..1000] ]; // _Vincenzo Librandi_, Apr 08 2011

%Y Cf. A017245.

%K nonn

%O 1,1

%A _Jeff Burch_