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A278878
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Number of tilings of a 7 X n rectangle using pentominoes of any shape and monominoes.
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1
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1, 4, 508, 76003, 9616962, 1178422563, 147382229321, 18446349150367, 2306845502243104, 288660593026069762, 36110872742261362007, 4516714276347536995415, 564976767651757484324113, 70671912291059592748455901, 8840222401663200361818980813
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OFFSET
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0,2
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LINKS
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EXAMPLE
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a(1) = 4:
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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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