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%I #6 Sep 08 2022 08:46:00
%S 71,8999,15551,71999,197567,242999,294911,876023,995327,1265471,
%T 2144951,2829887,3086999,4962311,5724503,6560999,7008191,10719143,
%U 14787287,15551999,18874367,22639103,36863999,45796031,54257111,63700991
%N Primes of the form 9n^3-1.
%H Vincenzo Librandi, <a href="/A200960/b200960.txt">Table of n, a(n) for n = 1..1000</a>
%t Select[Table[9n^3-1,{n,1,4000}],PrimeQ]
%o (Magma) [a: n in [1..200] | IsPrime(a) where a is 9*n^3-1]
%K nonn,easy
%O 1,1
%A _Vincenzo Librandi_, Nov 26 2011
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