Hilltop maps: number of nX4 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..1 nX4 array.
A219074
Hilltop maps: number of nX4 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..1 nX4 array.
Terms
- a(0) =9a(1) =165a(2) =2321a(3) =32945a(4) =477309a(5) =6879341a(6) =99118753a(7) =1428782305a(8) =20594013941a(9) =296830835781
External references
- oeis: A219074