Number of multisets of nonempty words with a total of n letters over 9-ary alphabet such that within each word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.
A292724
Number of multisets of nonempty words with a total of n letters over 9-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) =119259a(9) =1055520a(10) =6837054a(11) =49975756a(12) =358031350a(13) =2673108092a(14) =20399335633a(15) =161247005007
External references
- oeis: A292724