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

A203217

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

Terms

    a(0) =1a(1) =2a(2) =8a(3) =59a(4) =731a(5) =15277a(6) =617467a(7) =42956004a(8) =5260670473

External references