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

A197796

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

Terms

    a(0) =1a(1) =7a(2) =45a(3) =630a(4) =16377a(5) =793262a(6) =73405633a(7) =12833817343

External references