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A013990 Number of edge-disjoint paths between opposite corners of n X n grid. 5
1, 1, 2, 16, 800, 323632, 1086297184, 30766606427588, 7466577706821521924, 15681997226277809235573754, 286995508313697459220070082104780, 45988915870193885369543805313062149050276 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
REFERENCES
rec.puzzles Dec 10 1995
LINKS
CROSSREFS
Sequence in context: A012920 A013088 A013137 * A013005 A013000 A013178
KEYWORD
nonn,hard
AUTHOR
EXTENSIONS
a(10) and a(11) from Sean A. Irvine, Sep 24 2018
STATUS
approved

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Last modified March 29 08:13 EDT 2024. Contains 371265 sequences. (Running on oeis4.)