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

A205082

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

Terms

    a(0) =1a(1) =2a(2) =5a(3) =12a(4) =103a(5) =1026a(6) =16225a(7) =423136a(8) =19330620a(9) =1431173789

External references