Numbers k such that 20^k - 19^k is prime.

A062586

Numbers k such that 20^k - 19^k is prime.

Terms

    a(0) =5a(1) =17a(2) =109a(3) =1979a(4) =6899a(5) =7331a(6) =18661a(7) =79621a(8) =81649

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