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..2 n X n array.
A218226
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..2 n X n array.
Terms
- a(0) =1a(1) =15a(2) =497a(3) =63309a(4) =32362849a(5) =66220959971
External references
- oeis: A218226