Numbers k such that (28^k - 3^k)/25 is prime.

A384736

Numbers k such that (28^k - 3^k)/25 is prime.

Terms

    a(0) =2a(1) =3a(2) =7a(3) =43a(4) =197a(5) =13397a(6) =28837a(7) =29153

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