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A205069
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Number of (n+1)X6 0..1 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in all its horizontal and vertical neighbors
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1
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584, 244, 347, 528, 856, 1232, 1852, 2640, 4056, 5776, 8948, 12784, 19776, 28208, 43622, 62192, 96204, 137168, 212276, 302544, 468324, 667280, 1033266, 1471728, 2279696, 3246000, 5029516, 7159280, 11095980, 15790288, 24479172, 34826576
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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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FORMULA
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Empirical: a(n) = 3*a(n-2) -2*a(n-6) -3*a(n-8) -3*a(n-10) -a(n-12) -a(n-14) +5*a(n-16) +9*a(n-18) +11*a(n-20) +11*a(n-22) +10*a(n-24) +6*a(n-26) +3*a(n-28) +a(n-30) for n>34
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EXAMPLE
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Some solutions for n=4
..0..0..1..1..1..1....0..0..0..1..1..1....1..1..1..1..0..0....0..0..0..1..1..1
..0..0..0..0..1..0....1..0..0..0..0..1....1..0..1..1..1..1....1..0..0..0..0..1
..1..0..1..0..1..1....0..1..0..1..0..1....1..1..0..1..0..1....0..1..0..1..0..1
..1..0..0..0..0..0....0..0..0..0..0..0....1..1..1..1..1..0....0..0..0..0..0..0
..1..1..1..0..1..0....1..1..0..1..0..0....0..1..0..1..1..1....1..1..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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