A221450 Hilltop maps: number of 5Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..1 5Xn array.

1, 355, 9829, 230845, 6415089, 177320895, 4832005625, 131942833529, 3606055280657, 98529266203659, 2692051448713949, 73554857285973785, 2009736562063323785, 54911874439751493035, 1500353181134236949205

Offset: 1

Author

R. H. Hardin Jan 17 2013

Keywords

• nonn

Comments

Row 5 of A221446

Examples

			Some solutions for n=3
..0..1..1....0..1..0....1..1..0....1..0..1....1..1..0....0..1..0....1..1..1
..1..1..0....0..0..0....0..1..0....0..1..0....1..1..0....0..1..1....1..0..0
..1..1..0....1..1..1....0..1..0....0..0..1....1..1..1....0..0..0....1..1..1
..1..1..1....0..1..0....1..1..1....1..1..1....0..0..1....1..1..0....1..1..1
..1..0..1....0..0..1....1..0..1....0..0..1....1..1..0....1..0..1....1..1..1
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..49