Number of n-length words w over a 9-ary alphabet {a1,a2,...,a9} such that #(w,a1) >= #(w,a2) >= ... >= #(w,a9) >= 0, where #(w,x) counts the letters x in word w.
A226879
Number of n-length words w over a 9-ary alphabet {a1,a2,...,a9} such that #(w,a1) >= #(w,a2) >= ... >= #(w,a9) >= 0, where #(w,x) counts the letters x in word w.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =10a(4) =47a(5) =246a(6) =1602a(7) =11481a(8) =95503a(9) =871030a(10) =5250758a(11) =38454351a(12) =273492122a(13) =2051148347a(14) =15736849481a(15) =125536061475
External references
- oeis: A226879