Sum of factorial-Catalan numbers over a certain family of decorations.
A289427
Sum of factorial-Catalan numbers over a certain family of decorations.
Terms
- a(0) =1a(1) =4a(2) =32a(3) =320a(4) =3584a(5) =43264a(6) =553472a(7) =7441920a(8) =104740864
External references
- oeis: A289427