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a(n) = prime(5*n - 2).
1

%I #15 Sep 08 2022 08:44:50

%S 5,19,41,61,83,107,137,163,191,223,241,271,307,337,367,397,431,457,

%T 487,521,563,593,617,647,677,719,751,787,823,857,883,929,967,997,1031,

%U 1061,1093,1123,1171,1213,1237,1283,1303,1361,1409,1439,1471

%N a(n) = prime(5*n - 2).

%H Ivan Panchenko, <a href="/A031379/b031379.txt">Table of n, a(n) for n = 1..1000</a>

%t Prime[5*Range[50]-2] (* _Harvey P. Dale_, Jun 18 2014 *)

%o (Magma) [ NthPrime(5*n-2): n in [1..1000] ]; // _Vincenzo Librandi_, Apr 11 2011

%K nonn

%O 1,1

%A _Jeff Burch_