Number of n-length words w over an n-ary alphabet {a_1,...,a_n} such that w contains never more than j consecutive letters a_j for 1<=j<=n.

A242635

Number of n-length words w over an n-ary alphabet {a_1,...,a_n} such that w contains never more than j consecutive letters a_j for 1<=j<=n.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =21a(4) =208a(5) =2631a(6) =40295a(7) =724892a(8) =14984945a(9) =350068993a(10) =9121438862a(11) =262285777567

External references