Hilltop maps: number of nX4 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or vertical neighbor in a random 0..1 nX4 array.
A218350
Hilltop maps: number of nX4 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or vertical neighbor in a random 0..1 nX4 array.
Terms
- a(0) =9a(1) =149a(2) =2069a(3) =28661a(4) =401253a(5) =5609569a(6) =78394141a(7) =1095695529a(8) =15314367301a(9) =214044940145
External references
- oeis: A218350