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A201844
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Number of zero-sum nX5 -1..1 arrays with every element equal to at least one horizontal or vertical neighbor
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1
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1, 411, 17031, 1566319, 109797321, 8964073263, 697824874477, 56238345975057, 4510071758583443, 365508148420971423, 29684298137697156807, 2422133463372341456079, 198166150735435791683617
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=3
..1.-1..0..1.-1...-1..1..0..0..0...-1.-1.-1..1..0....0..1..1..1..0
..1.-1..0..1.-1...-1..1.-1.-1..1...-1..0..1..1..0....0.-1.-1.-1..0
..0..0..0..0..0....0..0.-1..1..1...-1..0..1..1..0....1..1.-1.-1..0
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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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