Sum of factorial-Catalan numbers over a certain family of decorations.
A289429
Sum of factorial-Catalan numbers over a certain family of decorations.
Terms
- a(0) =1a(1) =3a(2) =18a(3) =126a(4) =936a(5) =7164a(6) =55800a(7) =439560a(8) =3489696
External references
- oeis: A289429