Number of multisets of nonempty words with a total of n letters over 7-ary alphabet such that within each word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.
A292722
Number of multisets of nonempty words with a total of n letters over 7-ary alphabet such that within each word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =14a(4) =67a(5) =343a(6) =2151a(7) =14900a(8) =78939a(9) =470880a(10) =2805054a(11) =17296396a(12) =110869750a(13) =716116412a(14) =4868928433a(15) =30169477167a(16) =196213489166
External references
- oeis: A292722