Number of n-digit positive integers with all digits distinct.

A073531

Number of n-digit positive integers with all digits distinct.

Terms

    a(0) =9a(1) =81a(2) =648a(3) =4536a(4) =27216a(5) =136080a(6) =544320a(7) =1632960a(8) =3265920a(9) =3265920

External references