A220300 Number of ways to cut a 7 X n rectangle into rectangles with integer sides.

1, 64, 12634, 3149674, 846280548, 233276449488, 64878517290010, 18100579400986674, 5055501014135301068, 1412555471061355121760, 394736020870056624585954, 110313635920498690779144346, 30828978488622550052903902112, 8615722882208603126215501978476

Offset

0,2

Links

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

Alois P. Heinz, G.f. and Maple program for A220300

David A. Klarner and Spyros S. Magliveras, The number of tilings of a block with blocks, European Journal of Combinatorics 9 (1988), 317-330.

Joshua Smith and Helena Verrill, On dividing rectangles into rectangles

Formula

G.f.: see link above.

Maple

# see link above.

Crossrefs

Column m=7 of A116694.

Sequence in context: A202548 A364520 A209779 * A316485 A292025 A185562

Adjacent sequences: A220297 A220298 A220299 * A220301 A220302 A220303

Keyword

nonn

Author

Alois P. Heinz, Dec 10 2012

Status

approved