Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 2,4,3,1,1,0,0 for x=0,1,2,3,4,5,6.
A197868
Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 2,4,3,1,1,0,0 for x=0,1,2,3,4,5,6.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =23a(4) =108a(5) =3747a(6) =135196a(7) =4459381a(8) =755829713a(9) =172047582057
External references
- oeis: A197868