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..1 4Xn array.
A221449
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..1 4Xn array.
Terms
- a(0) =1a(1) =105a(2) =1473a(3) =18393a(4) =260557a(5) =3669101a(6) =51186449a(7) =715191073a(8) =9997750841a(9) =139736151537
External references
- oeis: A221449