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A220126
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Number of tilings of a 9 X n rectangle using integer-sided rectangular tiles of area 9.
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2
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1, 1, 1, 2, 3, 4, 6, 9, 13, 37, 64, 95, 188, 326, 513, 875, 1449, 2302, 4289, 7422, 12072, 21561, 37559, 62571, 107806, 184027, 306628, 532661, 915705, 1537768, 2654311, 4574383, 7752577, 13292546, 22778306, 38625110, 66213867, 113475693, 192821642, 330086669
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OFFSET
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0,4
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LINKS
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EXAMPLE
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a(5) = 4, because there are 4 tilings of a 9 X 5 rectangle using integer-sided rectangular tiles of area 9:
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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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