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A013996 Number of edge-disjoint paths between opposite corners of 7 X n grid. 7
1, 1, 128, 33850, 18787340, 13662905466, 10816244385930, 8900924886661736, 7466577706821521924, 6332745788043635410871, 5399881205287667310503858, 4621213692709052543074522862 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

REFERENCES

rec.puzzles Dec 10 1995.

LINKS

Sean A. Irvine, Table of n, a(n) for n = 0..50

CROSSREFS

Sequence in context: A264189 A264076 A067822 * A239648 A239404 A220301

Adjacent sequences:  A013993 A013994 A013995 * A013997 A013998 A013999

KEYWORD

nonn

AUTHOR

Dan Hoey

STATUS

approved

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Last modified June 20 06:56 EDT 2021. Contains 345157 sequences. (Running on oeis4.)