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A013990
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Number of edge-disjoint paths between opposite corners of n X n grid.
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5
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1, 1, 2, 16, 800, 323632, 1086297184, 30766606427588, 7466577706821521924, 15681997226277809235573754, 286995508313697459220070082104780, 45988915870193885369543805313062149050276
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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REFERENCES
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rec.puzzles Dec 10 1995
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LINKS
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CROSSREFS
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KEYWORD
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nonn,hard
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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