Number of length n primitive (=aperiodic or period n) n-ary words.

A252764

Number of length n primitive (=aperiodic or period n) n-ary words.

Terms

    a(0) =1a(1) =2a(2) =24a(3) =240a(4) =3120a(5) =46410a(6) =823536a(7) =16773120a(8) =387419760a(9) =9999899910a(10) =285311670600

External references