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

A197939

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

Terms

    a(0) =1a(1) =4a(2) =10a(3) =68a(4) =882a(5) =9972a(6) =355820a(7) =18442496a(8) =1309834738

External references