Number of (3,3; n,n)-partitions of a chain of length n^2 + n.
A055663
Number of (3,3; n,n)-partitions of a chain of length n^2 + n.
Terms
- a(0) =220a(1) =4004a(2) =43680a(3) =371280a(4) =2713200a(5) =17907120a(6) =109830336a(7) =637408200a(8) =3543239700a(9) =19028509500a(10) =99348849600a(11) =506679132960
External references
- oeis: A055663