A031337 - OEIS

%I #24 Sep 08 2022 08:44:50

%S 7,19,37,53,71,89,107,131,151,173,193,223,239,263,281,311,337,359,383,

%T 409,433,457,479,503,541,569,593,613,641,659,683,719,743,769,809,827,

%U 857,881,911,941,971,997,1021,1049,1069,1097,1123,1163,1193

%N a(n) = prime(4*n).

%H Jens Kruse Andersen, <a href="/A031337/b031337.txt">Table of n, a(n) for n = 1..10000</a>

%p ithprime(4*n)

%t Prime[4 Range[50]] (* _Alonso del Arte_, Feb 20 2013 *)

%o (Magma) [NthPrime(4*n): n in [1..1000]]; // _Vincenzo Librandi_, Apr 11 2011

%o (PARI) a(n)=prime(4*n) \\ _Edward Jiang_, Sep 08 2014

%Y Cf. A031215.

%K nonn,easy

%O 1,1

%A _Jeff Burch_