Hilltop maps: number of n X n binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, vertical or antidiagonal neighbor in a random 0..3 n X n array.
A218365
Hilltop maps: number of n X n binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, vertical or antidiagonal neighbor in a random 0..3 n X n array.
Terms
- a(0) =1a(1) =15a(2) =509a(3) =65409a(4) =33488029a(5) =68583014753
External references
- oeis: A218365