Hilltop maps: number of 6Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..3 6Xn array.
A218641
Hilltop maps: number of 6Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..3 6Xn array.
Terms
- a(0) =1a(1) =4001a(2) =261505a(3) =16773633a(4) =1073490145a(5) =68702054721
External references
- oeis: A218641