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A013993 Number of edge-disjoint paths between opposite corners of 4 X n grid. 6
1, 1, 16, 335, 9754, 323632, 11171466, 389866263, 13662905466, 479251547011, 16821606120516, 590415835527858, 20726430358013659, 727543012137899046, 25540208938124629118, 896540705406585866451 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
REFERENCES
rec.puzzles Dec 10 1995.
LINKS
CROSSREFS
Sequence in context: A218476 A240344 A068368 * A058722 A318013 A320399
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified March 28 08:22 EDT 2024. Contains 371236 sequences. (Running on oeis4.)