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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, 4256, 631408, 287890282, 394680026626, 1633299243490821, 20522104351316248402, 784379015232375006607050, 91206645757124024620735442618, 32264019671635009481678592579241059, 34725332380760680832137350774453679498244 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,2
LINKS
Table of n, a(n) for n=2..14.
FORMULA
a(n) = A007764(n) / 2. - Andrew Howroyd, May 12 2017
CROSSREFS
Cf. A007764.
Sequence in context: A009684 A221080 A009527 * A331623 A158121 A328427
Adjacent sequences: A053509 A053510 A053511 * A053513 A053514 A053515
KEYWORD
nonn,walk
AUTHOR
Horst H. Manninger, Jan 14 2000
EXTENSIONS
Corrected, additional terms from A007764 by Andrew Howroyd, May 12 2017
Offset corrected by Joerg Arndt, Dec 03 2018
STATUS
approved

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Last modified June 5 14:50 EDT 2024. Contains 373107 sequences. (Running on oeis4.)