Numbers n such that 4*11^n - 1 is prime.

A205521

Numbers n such that 4*11^n - 1 is prime.

Terms

    a(0) =1a(1) =3a(2) =7a(3) =13a(4) =25a(5) =243a(6) =349a(7) =3645a(8) =10245a(9) =40647a(10) =40749

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