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A204864
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Number of (n+2)X7 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly two different ways, and new values 0..1 introduced in row major order
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1
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20113, 136899, 1013668, 7620885, 59491439, 462259671, 3572132537, 27779761123, 216129338685, 1675476437558, 13027242027202, 101268097797410, 786267089036436, 6110786429125854, 47489850472550153, 368897712406751027
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OFFSET
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1,1
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COMMENTS
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Column 5 of A204867
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..210
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EXAMPLE
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Some solutions for n=3
..0..1..0..1..1..0..0....0..1..1..1..1..0..0....0..1..0..0..0..0..1
..0..1..1..0..0..1..0....1..1..1..0..0..1..0....0..1..0..1..1..0..1
..0..1..0..0..0..0..0....1..0..0..0..0..0..0....1..1..1..1..1..1..1
..0..1..1..1..1..1..1....1..0..0..1..1..1..1....0..0..0..0..0..0..0
..0..0..0..0..1..1..0....1..1..0..1..1..0..0....0..0..1..1..0..0..1
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CROSSREFS
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Sequence in context: A035926 A186565 A186480 * A145535 A190474 A109479
Adjacent sequences: A204861 A204862 A204863 * A204865 A204866 A204867
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin Jan 20 2012
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STATUS
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approved
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