%I #21 Jul 04 2021 08:43:23
%S 2,5,151,223,313,1277,8447
%N Numbers k such that 45^k - 44^k is prime or a strong pseudoprime.
%C a(8) > 10^5. - _Robert Price_, Jan 02 2013
%o (PARI) forprime(n=1,9999,ispseudoprime(45^n-44^n)&print1(n",")) \\ - _M. F. Hasler_, Sep 21 2013
%Y Cf. A000043, A057468, A059801-A059803, A062572-A062609, A215632, A062612-A062666.
%K nonn,hard
%O 1,1
%A _Mike Oakes_, May 18 2001, May 19 2001
%E Edited by _M. F. Hasler_, Sep 21 2013