A075996 Primes of the form 2 + 2^n + 3^n.

7, 37, 277, 10301051460914430942120966371077, 599003433304810403471724557167760804513610446042757207757

Offset: 1

Author

Zak Seidov, Oct 17 2002

Keywords

• nonn

Links

• Charles R Greathouse IV, Table of n, a(n) for n = 1..7

Crossrefs

Cf. A076513, A173657.

Programs

Magma

[ a: n in [0..250] | IsPrime(a) where a is 2+2^n+3^n ]; // Vincenzo Librandi, Dec 16 2010

PARI

for(n=1, 100, if(ispseudoprime(t=3^n+2^n+2), print1(t", "))) \\ Charles R Greathouse IV, Jun 08 2016