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A273477 Number of tilings of a 7 X n rectangle using pentominoes of shapes W, U, X and monominoes. 2
1, 1, 23, 1086, 13097, 261110, 5732276, 105028302, 2057123951, 40750196324, 789214306848, 15416490294168, 301533431477968, 5881271193704355, 114836714153318686, 2242611029205195253, 43780084385383228801, 854790034707804119211, 16689735991827528511674 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..775

Wikipedia, Pentomino

CROSSREFS

Cf. A264765.

Sequence in context: A042012 A128404 A126741 * A202656 A321569 A061063

Adjacent sequences:  A273474 A273475 A273476 * A273478 A273479 A273480

KEYWORD

nonn

AUTHOR

Alois P. Heinz, May 23 2016

STATUS

approved

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Last modified March 26 16:33 EDT 2019. Contains 321510 sequences. (Running on oeis4.)