A215435 Primes of form 3^k + k^3 - 1.

3, 53, 367, 20411, 10301051460877537453973547542467, 7509466514979724803946715958615457

Offset: 1

Author

Vincenzo Librandi, Sep 03 2012

Keywords

• nonn

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..11

Programs

Magma

[ a: n in [0..250] | IsPrime(a) where a is 3^n + n^3 - 1 ]

Mathematica

Select[Table[3^n + n^3 - 1, {n, 0, 500}], PrimeQ ]