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

A197798

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

Terms

    a(0) =1a(1) =4a(2) =4a(3) =41a(4) =434a(5) =2975a(6) =123177a(7) =4063153a(8) =194524778

External references