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A153371
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Number of zig-zag paths from top to bottom of a rectangle of width 11 with 2n rows whose color is that of the top right corner
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4
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10, 36, 132, 488, 1812, 6744, 25132, 93720, 349620, 1304504, 4867884, 18166008, 67794100, 253006296, 944222892, 3523868888, 13151219892, 49080945144, 183172429612, 683608511160, 2551261090740, 9521434803224, 35534476025004
(list; graph; refs; listen; history; internal format)
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