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A189156
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Number of nX4 binary arrays without the pattern 0 0 1 1 diagonally, vertically or horizontally
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1
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15, 225, 3375, 37976, 424401, 4597967, 48460966, 507947896, 5289780940, 54890361712, 568739622865, 5886254888757, 60885233141712, 629580674428109, 6508873299252199, 67284551942503294, 695503798053171610
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for 5X4
..0..0..0..1....0..0..0..1....0..0..1..0....0..0..0..1....0..0..0..1
..1..1..1..0....1..1..0..0....1..1..0..1....1..1..0..1....1..1..0..1
..0..0..0..1....1..0..1..1....1..1..1..0....0..1..0..1....0..1..1..0
..0..0..0..0....0..0..0..1....0..1..0..1....1..1..1..1....1..1..0..1
..1..1..1..1....0..1..1..0....0..1..1..0....0..1..0..0....0..1..0..0
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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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