Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 2,2,1,0,0,0,0 for x=0,1,2,3,4,5,6.

A197851

Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 2,2,1,0,0,0,0 for x=0,1,2,3,4,5,6.

Terms

    a(0) =1a(1) =4a(2) =10a(3) =103a(4) =1487a(5) =43030a(6) =2321125a(7) =232682724a(8) =43647140344

External references