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

A197662

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

Terms

    a(0) =1a(1) =4a(2) =21a(3) =260a(4) =5402a(5) =277217a(6) =26746470a(7) =4529806572

External references