Numbers k such that 4^k + 31 is prime.

A262971

Numbers k such that 4^k + 31 is prime.

Terms

    a(0) =2a(1) =6a(2) =18a(3) =270a(4) =422a(5) =596a(6) =6068a(7) =42140a(8) =64178a(9) =158732a(10) =1509278

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