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A318074
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Number of nX7 0..1 arrays with every element unequal to 0, 1, 2 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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1
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64, 190, 404, 861, 2195, 9966, 46884, 184156, 819263, 3703730, 15865269, 69944965, 310937380, 1361781447, 5998215467, 26503896368, 116659469704, 513984726015, 2266966511804, 9989194862172, 44021107304800, 194059543279029
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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=5
..0..1..1..1..1..1..1. .0..0..1..1..1..1..1. .0..0..0..0..0..0..0
..1..1..1..1..1..1..1. .0..1..1..1..1..1..1. .0..1..1..0..0..0..0
..1..1..1..1..1..0..1. .1..1..0..1..1..0..1. .0..0..0..0..1..0..0
..1..0..0..1..0..1..1. .1..0..1..1..1..0..1. .0..0..0..1..0..0..0
..1..1..1..1..1..1..0. .1..1..1..1..1..1..1. .0..0..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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