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A297906
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Number of n X 7 0..1 arrays with every element equal to 0, 1, 3 or 4 king-move adjacent elements, with upper left element zero.
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1
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21, 203, 20, 466, 2353, 1586, 23911, 117161, 369290, 3815083, 22352269, 133622612, 1094086797, 7257658041, 50479207435, 380579362922, 2653381878723, 19060249633810, 139787845467370, 993619765856273, 7181175650570587
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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=7
..0..1..0..0..1..0..1. .0..1..0..0..1..0..0. .0..1..0..0..0..0..0
..0..1..0..0..1..0..1. .1..1..1..1..1..1..1. .1..0..0..1..0..1..1
..1..1..1..1..1..0..0. .0..1..0..0..0..0..0. .1..1..0..1..0..1..1
..0..1..0..0..1..0..1. .0..1..0..0..1..0..0. .1..1..0..0..0..0..1
..0..1..0..0..1..0..0. .1..1..1..1..1..1..1. .0..0..1..1..1..1..0
..1..1..1..1..1..0..0. .1..0..0..0..0..0..0. .1..1..0..0..1..0..0
..0..1..0..0..1..1..1. .1..0..0..1..1..0..0. .1..1..0..0..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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