Numbers n such that (10^(2n+1)+54*10^n-1)/9 is prime.

A107127

Numbers n such that (10^(2n+1)+54*10^n-1)/9 is prime.

Terms

    a(0) =0a(1) =3a(2) =33a(3) =311a(4) =2933a(5) =22235a(6) =39165a(7) =41585

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