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A013992 Edge-disjoint paths between opposite corners of 3 X n grid. +0
1
1, 1, 8, 72, 800, 9754, 121130, 1508919, 18787340, 233941432, 2912502538, 36262251784, 451462592746, 5620827261214, 69979671635586, 871259379376415, 10847277968319460, 135050246142276024 (list; graph; listen)
OFFSET

0,3
REFERENCES

rec.puzzles Dec 10 1995.

CROSSREFS

Sequence in context: A082366 A049388 A014479 this_sequence A129103 A111812 A138433

Adjacent sequences: A013989 A013990 A013991 this_sequence A013993 A013994 A013995

KEYWORD

nonn,hard

AUTHOR

Dan Hoey (Hoey(AT)AIC.NRL.Navy.Mil)

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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