Numbers k such that 10^(2k+1) - 4*10^k - 1 is prime.

A183186

Numbers k such that 10^(2k+1) - 4*10^k - 1 is prime.

Terms

    a(0) =88a(1) =112a(2) =198a(3) =622a(4) =4228a(5) =10052a(6) =55862

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