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

A197786

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

Terms

    a(0) =1a(1) =4a(2) =18a(3) =209a(4) =4988a(5) =221443a(6) =19332957a(7) =3266183233

External references