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A226714
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Number of nX5 (-1,0,1) arrays of determinants of 2X2 subblocks of some (n+1)X6 binary array
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1
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181, 13691, 539703, 20577215, 833949273, 34404755041, 1412775737517, 57827217804729, 2366890987279579, 96919708660909729, 3969044355415426525, 162532913694902119493, 6655600103815564563993, 272542304676407531357487
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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
.-1.-1..1..1.-1...-1..0..0..0..1...-1..0..0..0..1...-1..0.-1..0..1
..1..1.-1.-1..1....1..0.-1..0.-1....0..0..1.-1..0....1..0..1..0..0
.-1..0..0..1.-1...-1..1..0.-1..1....0..1..0.-1..1....0..0.-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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