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A232121
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Number of (n+1)X(5+1) 0..2 arrays with every element both >= and <= some horizontal or vertical neighbor
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1
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21717, 6462505, 1841606457, 539351064745, 157357630962031, 45923654534440885, 13402622472944146617, 3911492760590744026197, 1141551698701388435111293, 333156695578132081213475329, 97230275087492714949873039507
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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=1
..0..1..2..2..2..0....0..0..0..1..2..2....0..1..1..1..0..2....2..0..0..0..2..2
..0..0..0..0..1..0....0..0..1..2..2..2....0..0..1..1..0..2....2..1..1..0..2..2
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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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