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A221452 Hilltop maps: number of 7Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..1 7Xn array 1
1, 4063, 437437, 36364977, 3888200065, 414116287743, 43045366565233, 4487793927664209, 468786655087266657, 48944887790539796639, 5109638176609475597301, 533452901877309087321537 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 7 of A221446
LINKS
EXAMPLE
Some solutions for n=3
..0..1..1....0..1..0....0..1..1....0..1..0....0..1..0....0..1..0....0..1..1
..0..0..0....0..1..0....0..0..1....0..0..1....1..1..1....1..1..1....0..1..0
..0..1..0....0..0..1....1..0..1....1..1..1....0..1..1....1..1..1....0..0..1
..1..0..1....1..1..1....0..1..1....0..0..1....1..0..0....0..0..1....1..0..0
..0..1..1....1..1..1....0..1..1....0..1..1....0..1..0....1..0..0....1..1..1
..0..1..0....1..0..1....0..1..1....0..1..0....1..0..1....0..1..1....0..0..1
..1..1..0....1..0..1....0..1..1....1..1..1....0..1..1....1..0..1....1..0..1
CROSSREFS
Sequence in context: A118060 A146894 A013688 * A233985 A126822 A251005
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 17 2013
STATUS
approved

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Last modified June 20 14:54 EDT 2024. Contains 373526 sequences. (Running on oeis4.)