A219284 - OEIS

%I #11 Sep 08 2022 08:46:04

%S 371281,141903217

%N Primes of the form 17^n - 16^n.

%C a(3) has 98 digits and a(6) has 3491 digits.

%H Vincenzo Librandi, <a href="/A219284/b219284.txt">Table of n, a(n) for n = 1..5</a>

%t Select[Table[17^n - 16^n, {n, 0, 300}], PrimeQ]

%o (Magma) [a: n in [0..30] | IsPrime(a) where a is 17^n - 16^n];

%Y Cf. A062583.

%K nonn,bref

%O 1,1

%A _Vincenzo Librandi_, Nov 24 2012