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A053512 Half the number of non-self-intersecting paths from one corner of an n X n grid to the opposite corner. 0
1, 6, 92, 2577, 390553 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Sequence in context: A005327 A171910 A113266 * A009607 A009684 A009527

Adjacent sequences:  A053509 A053510 A053511 * A053513 A053514 A053515

KEYWORD

nonn,walk

AUTHOR

Horst H. Manninger (mannixok(AT)hotmail.com), Jan 14 2000

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Last modified February 16 02:51 EST 2012. Contains 205860 sequences.