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

A198158

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

Terms

    a(0) =1a(1) =2a(2) =17a(3) =113a(4) =2211a(5) =79220a(6) =4456377a(7) =560699301a(8) =127364497803

External references