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A273477
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Number of tilings of a 7 X n rectangle using pentominoes of shapes W, U, X and monominoes.
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2
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1, 1, 23, 1086, 13097, 261110, 5732276, 105028302, 2057123951, 40750196324, 789214306848, 15416490294168, 301533431477968, 5881271193704355, 114836714153318686, 2242611029205195253, 43780084385383228801, 854790034707804119211, 16689735991827528511674
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refs;
listen;
history;
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internal format)
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OFFSET
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0,3
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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