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A268078
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Number of nX7 nonnegative integer arrays with new values introduced in each row and column in sequential order starting with zero.
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1
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1, 64, 10438, 3168306, 1412290158, 795460720710, 517992936833258, 369867566612849678, 280350778114908738774, 221061578416502345763162, 179038866982147711159785106, 147727481298984892538689733334
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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
..0..0..0..0..0..0..0....0..0..0..0..0..0..0....0..0..0..0..0..0..0
..0..0..0..1..0..0..0....0..1..1..1..0..1..1....0..0..0..0..0..1..1
..0..0..1..0..0..0..1....0..0..0..0..0..0..0....0..0..0..0..1..0..1
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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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