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%I #46 Mar 21 2018 06:42:25
%S 2,130,140
%N Numbers k such that k^k + 9 is a prime.
%C No more terms <= 7000. - _Jon E. Schoenfield_, Mar 16 2018
%o (PARI) isok(k) = ispseudoprime(k^k + 9); \\ _Altug Alkan_, Mar 16 2018
%Y Numbers k such that k^k + b is a prime: A300981 (b=-10), A300976 (b=-5), A100408 (b=-2), A100407 (b=2), A166852 (b=3), A100837 (b=4), A100838 (b=7), this sequence (b=9), A100839 (b=10), A173974 (b=43).
%Y Cf. A074966.
%K nonn,hard,more,bref
%O 1,1
%A _Seiichi Manyama_, Mar 16 2018
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