Numbers k such that (10^k - 1)*140/99 + 1 is prime.

A153331

Numbers k such that (10^k - 1)*140/99 + 1 is prime.

Terms

    a(0) =10a(1) =276a(2) =478a(3) =582a(4) =1630a(5) =6342a(6) =14688

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