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A159768
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Number of n-leaf binary trees that do not contain (()(()(()((()())())))) as a subtree.
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1
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1, 1, 2, 5, 14, 41, 124, 385, 1221, 3939, 12886, 42648, 142544, 480459, 1631287, 5574073, 19153815, 66146259, 229452587, 799140681, 2793373937, 9796395680, 34459558856, 121548541383, 429823475811, 1523511450184, 5411789548439
(list; graph; refs; listen; history; internal format)
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