1: (1)
2:(2)(1)
3: (2)(2)(1)
4: (122)(1)
5:(1122)(1)
6: (2)(1122)(1)
7: (12)(1122)(1)
8: (2)(12)(1122)(1)
9: (2)(2)(12)(1122)(1)
10: (122)(12)(1122)(1)
11: (2)(122)(12)(1122)(1)
12: (2)(2)(122)(12)(1122)(1)
13: (122)(122)(12)(1122)(1)
14: (112212212)(1122)(1)
15: (2)(112212212)(1122)(1)
16: (12)(112212212)(1122)(1)
17: (1121122122121122)(1)
18: (2)(1121122122121122)(1)
19: (2)(2)(1121122122121122)(1)
20: (122)(1121122122121122)(1)
例如,将A000002号是(1221221211221),使用Lyndon因式分解(122)(122)、(12)(1122)(1),因此a(13)=5。
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