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

A203211

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

Terms

    a(0) =1a(1) =4a(2) =39a(3) =454a(4) =13706a(5) =783226a(6) =88598695a(7) =20067022861

External references