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

A203201

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

Terms

    a(0) =1a(1) =7a(2) =45a(3) =678a(4) =19821a(5) =1135546a(6) =128706621a(7) =28772553591

External references