Numbers k such that 4^k*(2^k - 1) - 1 is prime.

A098857

Numbers k such that 4^k*(2^k - 1) - 1 is prime.

Terms

    a(0) =1a(1) =2a(2) =18a(3) =40a(4) =50a(5) =60a(6) =62a(7) =2688a(8) =2880a(9) =23678a(10) =35076

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