A215435 - OEIS

%I #8 Sep 08 2022 08:46:03

%S 3,53,367,20411,10301051460877537453973547542467,

%T 7509466514979724803946715958615457

%N Primes of form 3^k + k^3 - 1.

%H Vincenzo Librandi, <a href="/A215435/b215435.txt">Table of n, a(n) for n = 1..11</a>

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

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

%K nonn

%O 1,1

%A _Vincenzo Librandi_, Sep 03 2012