Central MacMahon numbers: a(n)=A060187(2*n+1, n+1).

A177043

Central MacMahon numbers: a(n)=A060187(2*n+1, n+1).

Terms

    a(0) =1a(1) =6a(2) =230a(3) =23548a(4) =4675014a(5) =1527092468a(6) =743288515164

External references