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A265177
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Number of n X 5 0..n*5-1 arrays with upper left zero and lower right n*5-1 and each element differing from its horizontal and vertical neighbors by a power of two.
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1
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16, 8463, 7796840, 19256175024, 62221755947285, 29140746691543180, 114300945033974982113, 143026744640969922998778, 665211626399246015524893315, 1103575752619261180934292157487, 3455181481764546173131937070949479, 4571072289935266583762051509912780981
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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=2:
..0..4..2..4..8....0..4..6..5..7....0..4..5..6..5....0..4..3..5..1
..2..3..4..5..9....2..3..5..1..9....4..8..9..5..9....2..6..5..7..9
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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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