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a(n) = prime(6*n-3).
1

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

%S 5,23,47,73,103,137,167,197,233,269,307,347,379,419,449,487,523,571,

%T 607,643,677,727,761,811,853,883,937,977,1019,1051,1093,1129,1187,

%U 1229,1279,1303,1367,1427,1453,1489,1543,1579,1613,1663,1709,1753

%N a(n) = prime(6*n-3).

%H Ivan Panchenko, <a href="/A031387/b031387.txt">Table of n, a(n) for n = 1..1000</a>

%t Table[Prime[6n-3],{n,50}] (* _Harvey P. Dale_, Oct 14 2018 *)

%o (Magma) [ NthPrime(6*n-3): n in [1..1000] ]; // _Vincenzo Librandi_, Apr 10 2011

%K nonn

%O 1,1

%A _Jeff Burch_

%E Corrected by Neven Juric (neven.juric(AT)apis-it.hr), May 15 2006