3-dimensional Catalan numbers.

A005789

3-dimensional Catalan numbers.

Terms

    a(0) =1a(1) =1a(2) =5a(3) =42a(4) =462a(5) =6006a(6) =87516a(7) =1385670a(8) =23371634a(9) =414315330a(10) =7646001090a(11) =145862174640

External references