Number of sets of nonempty words with a total of n letters over 9-ary alphabet.

A292843

Number of sets of nonempty words with a total of n letters over 9-ary alphabet.

Terms

    a(0) =1a(1) =9a(2) =117a(3) =1542a(4) =19404a(5) =239481a(6) =2900802a(7) =34609797a(8) =407615175a(9) =4747112731a(10) =54743025339a(11) =625791326688

External references