|
%I #9 Jun 22 2023 06:02:35
%S 0,1,2,4,5,17,18,23,57,58,340,837,4280,5352
%N Numbers k such that (10^k-1)^2 + 2 is prime.
%C No more terms up to k = 4000.
%o (PARI) is(n)=ispseudoprime((10^n-1)^2+2) \\ _Charles R Greathouse IV_, Jun 13 2017
%K more,nonn
%O 0,3
%A _Jason Earls_, Dec 03 2009
%E a(13)-a(14) from _Michael S. Branicky_, Jun 21 2023
|
