A220870 - OEIS

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A220870

Number of ways to tile an 8 X n rectangle with 1 X 1, 1 X 2 and 2 X 2 tiles (i.e., monomers, dominoes and squares).

2

1, 34, 12190, 2326760, 527889422, 114411435032, 25111681648122, 5492577770367562, 1202536689448371122, 263209502307938563332, 57615414908836236372072, 12611480741795288044400788, 2760554277959548230135794572, 604262547591999576093481473784

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

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

S. Butler and S. Osborne, Counting tilings by taking walks, 2012.

CROSSREFS

Cf. A063652, A220869.

Sequence in context: A189448 A214368 A328293 * A281539 A223040 A200461

Adjacent sequences: A220867 A220868 A220869 * A220871 A220872 A220873

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Dec 27 2012

EXTENSIONS

More terms from Alois P. Heinz, Jun 06 2013

STATUS

approved