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

A198006

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

Terms

    a(0) =1a(1) =4a(2) =33a(3) =328a(4) =7415a(5) =275014a(6) =18684018a(7) =2307507868a(8) =504270356235

External references