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A202791
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Number of nX4 binary arrays with every one adjacent to another one horizontally, diagonally, antidiagonally or vertically
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1
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7, 188, 3018, 45519, 702846, 10892633, 168585867, 2608652667, 40368680378, 624709738658, 9667409438049, 149603458151594, 2315118684227671, 35826543150768395, 554417008884929693, 8579622591285149046
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OFFSET
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1,1
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COMMENTS
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Column 4 of A202795
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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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FORMULA
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Empirical: a(n) = 15*a(n-1) -6*a(n-2) +199*a(n-3) +124*a(n-4) -102*a(n-5) +105*a(n-6) -282*a(n-7) -342*a(n-8) +162*a(n-9)
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EXAMPLE
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Some solutions for n=4
..1..1..0..0....1..1..0..0....1..0..1..1....0..1..1..0....1..1..1..0
..0..0..0..0....1..0..1..1....0..1..1..1....0..0..1..1....0..0..0..1
..0..0..1..0....1..1..0..1....0..0..0..1....1..0..1..1....0..0..1..0
..0..0..1..1....1..0..0..0....0..0..1..1....1..0..1..0....1..1..1..0
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CROSSREFS
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Sequence in context: A193811 A296234 A219567 * A304859 A303292 A010332
Adjacent sequences: A202788 A202789 A202790 * A202792 A202793 A202794
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin Dec 24 2011
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STATUS
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approved
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