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).

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

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