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

A197865

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

Terms

    a(0) =1a(1) =4a(2) =10a(3) =104a(4) =2091a(5) =34283a(6) =1753893a(7) =146268275a(8) =16031968421

External references