A013992 - OEIS

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A013992

Edge-disjoint paths between opposite corners of 3 X n grid.

1, 1, 8, 72, 800, 9754, 121130, 1508919, 18787340, 233941432, 2912502538, 36262251784, 451462592746, 5620827261214, 69979671635586, 871259379376415, 10847277968319460, 135050246142276024 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	REFERENCES	`rec.puzzles Dec 10 1995.`
	CROSSREFS	`Sequence in context: A082366 A049388 A014479 * A129103 A111812 A138433` `Adjacent sequences: A013989 A013990 A013991 * A013993 A013994 A013995`
	KEYWORD	`nonn,hard`
	AUTHOR	`Dan Hoey (Hoey(AT)AIC.NRL.Navy.Mil)`

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Last modified February 17 16:49 EST 2012. Contains 206058 sequences.