A226375 Number of tilings of an 11 X n rectangle using integer-sided square tiles of area > 1.

1, 0, 0, 0, 0, 4, 51, 0, 0, 0, 104, 777, 3845, 52, 45, 1247, 19600, 96138, 295711, 8256, 27485, 341034, 2741563, 10253987, 22931155, 1312790, 7243470, 60002173, 333466344, 1013398942, 1792951716, 224282542, 1374038796, 8632780685, 37298717355, 95755127099

Offset

0,6

Links

Alois P. Heinz, Table of n, a(n) for n = 0..1000

Example

a(5) = 4:
._._._._._.  ._._._._._.  ._._._._._.  ._._._._._.
|         |  |         |  |   |     |  |     |   |
|         |  |         |  |___|     |  |     |___|
|         |  |         |  |   |_____|  |_____|   |
|         |  |         |  |___|     |  |     |___|
|_________|  |_________|  |   |     |  |     |   |
|   |     |  |     |   |  |___|_____|  |_____|___|
|___|     |  |     |___|  |         |  |         |
|   |_____|  |_____|   |  |         |  |         |
|___|     |  |     |___|  |         |  |         |
|   |     |  |     |   |  |         |  |         |
|___|_____|  |_____|___|  |_________|  |_________|

Crossrefs

Column k=11 of A226206.

Sequence in context: A235604 A221477 A122464 * A347551 A048995 A215639

Adjacent sequences: A226372 A226373 A226374 * A226376 A226377 A226378

Keyword

nonn

Author

Alois P. Heinz, Jun 05 2013

Status

approved