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A226376 Number of tilings of a 12 X n rectangle using integer sided square tiles of area > 1. 2
1, 0, 1, 1, 13, 4, 98, 57, 511, 499, 3722, 3845, 24823, 31696, 164781, 243930, 1134938, 1847197, 7765162, 13890389, 53540736, 102899049, 371688482, 756873240, 2587867543, 5533483651, 18092417136, 40238855115, 126887317089, 291501063966, 892138812087 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

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

EXAMPLE

a(5) = 4:

._._._._._.  ._._._._._.  ._._._._._.  ._._._._._.

|   |     |  |     |   |  |   |     |  |     |   |

|___|     |  |     |___|  |___|     |  |     |___|

|   |_____|  |_____|   |  |   |_____|  |_____|   |

|___|     |  |     |___|  |___|     |  |     |___|

|   |     |  |     |   |  |   |     |  |     |   |

|___|_____|  |_____|___|  |___|_____|  |_____|___|

|   |     |  |     |   |  |     |   |  |   |     |

|___|     |  |     |___|  |     |___|  |___|     |

|   |_____|  |_____|   |  |_____|   |  |   |_____|

|___|     |  |     |___|  |     |___|  |___|     |

|   |     |  |     |   |  |     |   |  |   |     |

|___|_____|  |_____|___|  |_____|___|  |___|_____|

CROSSREFS

Column k=12 of A226206.

Sequence in context: A056139 A106293 A046734 * A222165 A277125 A249267

Adjacent sequences:  A226373 A226374 A226375 * A226377 A226378 A226379

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Jun 05 2013

STATUS

approved

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Last modified November 17 23:26 EST 2019. Contains 329242 sequences. (Running on oeis4.)