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A269959
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Number of tilings of a 10 X 3n rectangle using 10n trominoes of any shape.
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2
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1, 8266, 379419508, 25020222581494, 1830607857363940042, 137787968143635937039786, 10448677822353537147395706384, 793868918375370204415242288244707, 60346488218332294539638857492286577712, 4587865445075128062280066720936757293474915
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