Hilltop maps: number of n X n binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..2 n X n array.
A218586
Hilltop maps: number of n X n binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..2 n X n array.
Terms
- a(0) =1a(1) =13a(2) =449a(3) =56629a(4) =28543403a(5) =57707873919
External references
- oeis: A218586