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A219068
Hilltop maps: number of 7Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..2 7Xn array
0
1, 14719, 2053803, 264274797, 33731920377, 4315258520649, 552229937914889, 70669820168384171, 9043666108418141267, 1157321782620917173897, 148102961593696388657529
OFFSET
1,2
COMMENTS
Row 7 of A219063
EXAMPLE
Some solutions for n=3
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..1..0....0..0..1....0..1..0....0..1..0....0..0..1....0..0..0....0..0..0
..0..0..1....1..0..0....0..0..0....1..0..1....0..0..0....1..1..0....0..1..1
..0..1..1....0..1..1....1..0..1....1..1..1....1..0..1....0..1..1....0..1..0
..1..0..0....0..1..1....1..0..0....1..1..0....0..1..1....0..1..1....1..1..0
..1..0..0....1..0..0....1..1..0....0..1..0....0..0..1....1..1..1....0..0..0
..0..0..1....1..1..0....0..1..0....0..1..0....0..1..1....0..1..0....1..1..0
CROSSREFS
Sequence in context: A291145 A256839 A015312 * A023333 A249464 A209513
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 11 2012
STATUS
approved