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

A198051

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

Terms

    a(0) =1a(1) =3a(2) =4a(3) =47a(4) =453a(5) =5584a(6) =308351a(7) =13078670a(8) =1255831278a(9) =258372554787

External references