Hilltop maps: number of nX6 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..3 nX6 array.
A218636
Hilltop maps: number of nX6 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..3 nX6 array.
Terms
- a(0) =57a(1) =4065a(2) =262017a(3) =16773477a(4) =1073471633a(5) =68702054721
External references
- oeis: A218636