Numbers k such that 5^k + 3^k - 1 is prime.

A180741

Numbers k such that 5^k + 3^k - 1 is prime.

Terms

    a(0) =1a(1) =3a(2) =9a(3) =39a(4) =165a(5) =11289a(6) =44979a(7) =192321a(8) =377865

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