Hilltop maps: number of 4Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..2 4Xn array.
A218595
Hilltop maps: number of 4Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..2 4Xn array.
Terms
- a(0) =1a(1) =191a(2) =3567a(3) =56629a(4) =898763a(5) =14313773a(6) =228191491a(7) =3638365943a(8) =58007785937a(9) =924827168901
External references
- oeis: A218595