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Primes of the form 10n^3-9.
1

%I #6 Sep 08 2022 08:46:00

%S 71,631,21961,27431,49121,68581,121661,156241,393031,428741,689201,

%T 851831,1406071,1488761,2621431,3007621,4052231,4930381,5513671,

%U 5717861,6360551,7049681,7535701,7786871,9999991,11248631,13309991,15208741

%N Primes of the form 10n^3-9.

%H Vincenzo Librandi, <a href="/A201039/b201039.txt">Table of n, a(n) for n = 1..3000</a>

%t Select[Table[10n^3-9,{n,1,4000}],PrimeQ]

%o (Magma) [a: n in [1..200] | IsPrime(a) where a is 10*n^3-9]

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Nov 27 2011