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A203285
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T(n,k)=Number of nXk binary arrays with every element neighboring horizontally or vertically both a 0 and a 1
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7
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0, 0, 0, 0, 4, 0, 0, 4, 4, 0, 0, 16, 28, 16, 0, 0, 36, 64, 64, 36, 0, 0, 100, 372, 676, 372, 100, 0, 0, 256, 1444, 4624, 4624, 1444, 256, 0, 0, 676, 6528, 40000, 72852, 40000, 6528, 676, 0, 0, 1764, 28900, 311364, 996004, 996004, 311364, 28900, 1764, 0, 0, 4624, 127412
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OFFSET
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1,5
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COMMENTS
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Table starts
.0...0.....0.......0.........0...........0.............0...............0
.0...4.....4......16........36.........100...........256.............676
.0...4....28......64.......372........1444..........6528...........28900
.0..16....64.....676......4624.......40000........311364.........2534464
.0..36...372....4624.....72852......996004......14644480.......210076036
.0.100..1444...40000....996004....26193924.....674752576.....17603451684
.0.256..6528..311364..14644480...674752576...31747280900...1482014064400
.0.676.28900.2534464.210076036.17603451684.1482014064400.124891129720900
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LINKS
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EXAMPLE
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Some solutions for n=4 k=3
..1..1..1....0..1..0....0..1..1....1..0..1....1..0..1....0..0..0....0..0..1
..0..0..0....0..1..0....0..0..0....1..0..1....1..0..1....1..1..1....1..0..1
..0..1..0....0..1..0....1..1..1....1..0..1....0..1..0....1..0..1....1..0..1
..0..1..1....1..1..0....1..0..0....1..0..0....0..1..0....1..0..0....0..0..1
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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