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%I #16 Apr 16 2023 20:26:23
%S 7,9,11,353,7133
%N Numbers k such that 9*k^k - 8 is prime.
%C 9*353^353 - 8 is a probable prime.
%o (PARI) isok(k) = ispseudoprime(9*k^k - 8); \\ _Altug Alkan_, Apr 02 2018
%Y Numbers k such that b*k^k - b + 1 is prime: A110931 (b=2), A302132 (b=3), A301521 (b=4), A302123 (b=6), A302133 (b=8), this sequence (b=9), A302136 (b=10).
%K nonn,more
%O 1,1
%A _Seiichi Manyama_, Apr 02 2018
%E a(5) from _Michael S. Branicky_, Apr 15 2023
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