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A059454 Numbers n such that 2*3^n - 7 is prime. 2

%I

%S 0,2,3,5,6,9,14,39,51,73,101,155,183,286,291,310,313,335,570,951,1011,

%T 1183,1930,2586,3423,6486,7791

%N Numbers n such that 2*3^n - 7 is prime.

%t Do[ If[ PrimeQ[ 2*3^n - 7 ], Print[n] ], {n, 0, 5700} ]

%o (PARI) is(n)=ispseudoprime(2*3^n-7) \\ _Charles R Greathouse IV_, May 22 2017

%K nonn

%O 1,2

%A _Robert G. Wilson v_, Feb 15 2001

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Last modified May 26 19:44 EDT 2019. Contains 323597 sequences. (Running on oeis4.)