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A183320
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Number of nX8 binary arrays with an element zero only if there are an even number of ones to its left and an even number of ones above it
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1
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55, 523, 9767, 125103, 1872913, 25528515, 360327392, 4963103592, 68795107993, 947461430557, 13049865962515, 179449989707905, 2465460224449227, 33861928082629563, 464723391441659251, 6377980328407833025
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OFFSET
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1,1
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COMMENTS
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Column 8 of A183322
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..200
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EXAMPLE
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Some solutions for 5X8
..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0
..0..0..0..0..0..1..1..1....0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..0
..1..1..0..0..0..1..1..1....0..1..1..0..0..0..1..1....0..0..0..0..0..0..0..1
..1..1..1..1..1..1..0..1....0..1..1..0..0..1..1..0....0..0..0..1..1..0..1..1
..1..1..1..1..1..1..1..1....0..1..1..1..1..1..1..1....0..1..1..1..1..1..1..0
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CROSSREFS
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Sequence in context: A241699 A262103 A138053 * A185028 A222797 A180326
Adjacent sequences: A183317 A183318 A183319 * A183321 A183322 A183323
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin Jan 03 2011
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STATUS
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approved
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