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

A198039

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

Terms

    a(0) =1a(1) =5a(2) =14a(3) =84a(4) =1010a(5) =14730a(6) =541357a(7) =30164869a(8) =2205022165

External references