Number of sets of nonempty words with a total of n letters over nonary alphabet such that within each word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.
A340416
Number of sets of nonempty words with a total of n letters over nonary 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) =3a(3) =13a(4) =60a(5) =326a(6) =2065a(7) =14508a(8) =116845a(9) =1039459a(10) =6710565a(11) =48872487a(12) =350817295a(13) =2619846205a(14) =20019859960a(15) =158415989711
External references
- oeis: A340416