Number of multisets of nonempty words with a total of n letters over 6-ary alphabet such that within each word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.
A292721
Number of multisets of nonempty words with a total of n letters over 6-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) =9860a(8) =53739a(9) =279360a(10) =1595454a(11) =8733436a(12) =53035750a(13) =280946972a(14) =1626421033a(15) =9103196607a(16) =53266673126a(17) =300953629850
External references
- oeis: A292721