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A194190
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Number of ways to arrange 5 indistinguishable points on an n X n square grid so that no three points are collinear at any angle.
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4
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0, 0, 28, 1668, 25052, 215448, 1189868, 5199888, 18520572, 56978440, 155627304, 388897892, 894254904, 1932504496, 3945470564, 7669533756, 14291010972, 25694009628, 44662697948, 75451394832, 124066723008, 199190308172
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OFFSET
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1,3
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for 3 X 3:
..0..1..0....1..0..1....0..1..1....1..1..0....1..1..0....1..1..0....1..0..1
..0..1..1....1..1..0....1..0..0....1..0..1....1..0..0....0..0..1....1..0..0
..1..0..1....0..1..0....0..1..1....0..0..1....0..1..1....1..1..0....0..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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