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A281609
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Number of 6Xn 0..2 arrays with no element equal to more than one of its horizontal, diagonal or antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
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1
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122, 9188, 95623, 2563481, 69506779, 1732267694, 44428349137, 1138837839480, 29102840547371, 744335104686091, 19034344218360000, 486715748229292254, 12445950255418792107, 318255588377585182015, 8138127052120466124265
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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=3
..0..1..2. .0..1..0. .0..1..0. .0..0..1. .0..1..2. .0..1..0. .0..1..1
..2..1..2. .2..2..0. .0..2..0. .2..2..1. .0..2..1. .0..2..1. .2..0..2
..2..1..2. .1..0..1. .2..1..0. .0..0..1. .1..2..0. .1..0..1. .1..0..1
..2..0..2. .1..0..2. .1..0..2. .1..2..2. .1..0..1. .1..0..1. .1..0..1
..0..1..2. .2..0..1. .1..0..1. .0..1..0. .1..2..1. .2..0..2. .2..2..1
..2..1..0. .1..0..1. .2..2..0. .2..1..0. .1..0..1. .1..1..2. .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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