Hilltop maps: number of 4Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..2 4Xn array.
A219065
Hilltop maps: number of 4Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..2 4Xn array.
Terms
- a(0) =1a(1) =233a(2) =4017a(3) =64577a(4) =1030457a(5) =16477441a(6) =263575309a(7) =4216288593a(8) =67445440097
External references
- oeis: A219065