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

A203222

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

Terms

    a(0) =1a(1) =7a(2) =18a(3) =120a(4) =2053a(5) =33224a(6) =1174645a(7) =76951515a(8) =7087224160

External references