Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 3,2,1,1,0,1,0 for x=0,1,2,3,4,5,6.
A203219
Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 3,2,1,1,0,1,0 for x=0,1,2,3,4,5,6.
Terms
- a(0) =1a(1) =4a(2) =25a(3) =209a(4) =6570a(5) =247394a(6) =22594350a(7) =4188338350
External references
- oeis: A203219