Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 1,3,3,2,0,0,0 for x=0,1,2,3,4,5,6.
A197920
Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 1,3,3,2,0,0,0 for x=0,1,2,3,4,5,6.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =19a(4) =138a(5) =1816a(6) =41597a(7) =1642382a(8) =115083086a(9) =14000480447
External references
- oeis: A197920