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A302133 Numbers k such that 8*k^k - 7 is prime. 3

%I #16 May 14 2021 02:32:49

%S 10,800,1266,1395

%N Numbers k such that 8*k^k - 7 is prime.

%C The terms greater than or equal to 800 correspond to probable primes.

%C a(5) > 4000. - _Tyler NeSmith_, May 13 2021

%o (PARI) isok(k) = ispseudoprime(8*k^k - 7); \\ _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), this sequence (b=8), A302134 (b=9), A302136 (b=10).

%K nonn,more

%O 1,1

%A _Seiichi Manyama_, Apr 02 2018

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)