| 数据
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1, 0, 1, 1, 2, 1, 3, 2, 5, 3, 6, 5, 9, 6, 11, 9, 15, 11, 18, 15, 23, 18, 27, 23, 34, 27, 39, 34, 47, 39, 54, 47, 64, 54, 72, 64, 84, 72, 94, 84, 108, 94, 120, 108, 136, 120, 150, 136, 169, 150, 185, 169, 206, 185,225,206,249, 225,270,249,297,270,321,297,351,321
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