Numbers k such that (k!)^2 + k! - 1 is prime.

A084830

Numbers k such that (k!)^2 + k! - 1 is prime.

Terms

    a(0) =2a(1) =3a(2) =4a(3) =5a(4) =6a(5) =14a(6) =17a(7) =50a(8) =111a(9) =254a(10) =506a(11) =6613a(12) =7475

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