Hilltop maps: number of nX6 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..3 nX6 array.
A218808
Hilltop maps: number of nX6 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..3 nX6 array.
Terms
- a(0) =57a(1) =3969a(2) =253877a(3) =16247233a(4) =1039681033a(5) =66531801953
External references
- oeis: A218808