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A221450
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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
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1
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1, 355, 9829, 230845, 6415089, 177320895, 4832005625, 131942833529, 3606055280657, 98529266203659, 2692051448713949, 73554857285973785, 2009736562063323785, 54911874439751493035, 1500353181134236949205
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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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
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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