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A218597
Hilltop maps: number of 6Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..2 6Xn array
1
1, 2849, 224643, 14309253, 906390787, 57707873919, 3679019688741, 234587060833513, 14956980852954693, 953622639363956241, 60800788454758533673, 3876520842651206103055, 247158250520323924145773
OFFSET
1,2
COMMENTS
Row 6 of A218592
LINKS
EXAMPLE
Some solutions for n=3
..0..0..0....0..1..0....0..0..0....0..1..0....0..1..1....0..1..1....0..0..1
..1..1..0....1..0..1....1..0..1....1..0..1....0..1..0....0..1..1....1..1..1
..1..1..1....0..0..1....1..1..1....0..1..1....1..0..1....1..1..1....1..1..0
..1..1..0....1..1..0....0..0..0....0..0..1....1..0..0....1..0..1....1..0..0
..0..1..0....0..1..0....1..0..1....0..1..0....1..1..1....0..1..1....1..0..0
..0..0..1....1..0..1....1..1..0....1..0..0....1..0..1....0..1..1....0..1..1
CROSSREFS
Sequence in context: A257148 A254737 A234416 * A259296 A374373 A020429
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 03 2012
STATUS
approved