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A239271 Number of domicule tilings of a 9 X 2n grid. 2
1, 341, 1968400, 18633949879, 185175369431551, 1851260737169108297, 18523901518471987018869, 185376808904045560177646408, 1855186116430353424133583769247, 18566115077411836147307357343137943, 185803902034786238482393324889706764945 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

A domicule is either a domino or it is formed by the union of two neighboring unit squares connected via their corners.  In a tiling the connections of two domicules are allowed to cross each other.

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..200

CROSSREFS

Even bisection of column k=9 of A239264.

Sequence in context: A006107 A015371 A163582 * A204751 A247441 A045106

Adjacent sequences:  A239268 A239269 A239270 * A239272 A239273 A239274

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Mar 13 2014

STATUS

approved

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Last modified September 15 12:22 EDT 2019. Contains 327078 sequences. (Running on oeis4.)