Hilltop maps: number of n X n binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..2 n X n array.
A219057
Hilltop maps: number of n X n binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..2 n X n array.
Terms
- a(0) =1a(1) =15a(2) =503a(3) =64577a(4) =32958333a(5) =67441480753
External references
- oeis: A219057