Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 3,3,2,1,1,0,0 for x=0,1,2,3,4,5,6.
A198089
Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 3,3,2,1,1,0,0 for x=0,1,2,3,4,5,6.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =33a(4) =228a(5) =3088a(6) =57920a(7) =1692421a(8) =89966033a(9) =7774886220
External references
- oeis: A198089