Number of collections of nonempty multisets with a total of n+3 objects of exactly n colors.
A255953
Number of collections of nonempty multisets with a total of n+3 objects of exactly n colors.
Terms
- a(0) =0a(1) =5a(2) =56a(3) =492a(4) =3936a(5) =30710a(6) =240012a(7) =1904301a(8) =15446672a(9) =128576019a(10) =1100414420a(11) =9692024727a(12) =87872444424a(13) =820015945853
External references
- oeis: A255953