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A280178
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Number of nX6 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
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1
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9, 263, 3931, 43094, 421214, 3755997, 31821879, 258976696, 2046791216, 15814457993, 120011332264, 897444910233, 6629487497213, 48466584078054, 351182574432103, 2524953934109755, 18030795547257916, 127983331651736137
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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 n=4
..0..0..0..1..0..0. .0..1..1..1..1..1. .0..0..1..1..1..1. .0..0..0..0..0..1
..1..1..1..1..0..1. .0..1..1..1..0..0. .0..0..1..0..0..0. .0..0..1..1..1..1
..1..1..1..0..1..1. .0..1..0..0..0..0. .0..0..1..1..0..0. .0..1..1..0..0..1
..0..0..0..0..1..1. .0..0..0..0..0..0. .0..0..1..1..0..0. .1..1..1..0..0..1
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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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