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%I #16 Jul 04 2021 08:43:32
%S 3,31,67,197,2473,2477,35899
%N Numbers k such that 50^k - 49^k is a prime.
%C Terms greater than 1000 are often only strong pseudoprimes.
%C a(8) > 10^5. - _Robert Price_, Dec 03 2012
%Y Cf. A000043, A057468, A059801, A059802, A062572-A062666.
%K nonn,hard
%O 1,1
%A _Mike Oakes_, May 18 2001, May 19 2001
%E a(7) from _Robert Price_, Dec 03 2012