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A181397 Summed lengths of nonintersecting rook paths on a 6 X n board. 6
5, 256, 4882, 88608, 1692480, 32871240, 629907345, 11836974284, 218772951624, 3990894156672, 72039322124013, 1289057677580204, 22896767645452466, 404155803725865164, 7095412544059877973, 123985136981584276480, 2157631059961863479079, 37411816576772657794784 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Paths are self-avoiding from one corner to the diagonally opposite corner.

LINKS

Andrew Howroyd, Table of n, a(n) for n = 1..200

CROSSREFS

Row 6 of A181399.

Related sequences A181394, A181395, A181396, A181398.

Sequence in context: A002770 A069071 A275930 * A283039 A055386 A216849

Adjacent sequences:  A181394 A181395 A181396 * A181398 A181399 A181400

KEYWORD

nonn

AUTHOR

David Scambler, Oct 17 2010

EXTENSIONS

Terms a(7) and beyond from Andrew Howroyd, Jan 06 2020

STATUS

approved

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Last modified February 26 12:43 EST 2020. Contains 332280 sequences. (Running on oeis4.)