A322501 Number of tilings of an 8 X n rectangle using V (2m+1)-ominoes (m >= 0) in standard orientation.

1, 1, 34, 621, 10687, 181615, 3086898, 52338705, 888837716, 15029968375, 254605651987, 4312608660046, 73048456842772, 1237312902210617, 20957926357019583, 354990566329457044, 6012925190578975735, 101848368521145389471, 1725133116479186659346

Offset

0,3

Comments

The shapes of the tiles are:

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._. | |

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._. | |_. | |_._. | |_._._.

|_| |___| |_____| |_______| ... .

Links

Alois P. Heinz, Table of n, a(n) for n = 0..500

Wikipedia, Polyomino

Crossrefs

Column k=8 of A322494.

Sequence in context: A232079 A264067 A004418 * A020928 A061689 A166217

Adjacent sequences: A322498 A322499 A322500 * A322502 A322503 A322504

Keyword

nonn

Author

Alois P. Heinz, Dec 12 2018

Status

approved