Number of nXnXn triangular 0..2 arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors, and no element equal to its horizontal neighbors.
A214378
Number of nXnXn triangular 0..2 arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors, and no element equal to its horizontal neighbors.
Terms
- a(0) =3a(1) =14a(2) =94a(3) =890a(4) =11700a(5) =211760a(6) =5247716a(7) =177440488a(8) =8167458184a(9) =510966924026
External references
- oeis: A214378