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例子
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术语序列及其相应的集合系统开始于:
0: {}
1: {{1}}
20: {{1,2},{1,3}}
52: {{1,2},{1,3},{2,3}}
308: {{1,2},{1,3},{2,3},{1,4}}
820: {{1,2},{1,3},{2,3},{1,4},{2,4}}
2868: {{1,2},{1,3},{2,3},{1,4},{2,4},{3,4}}
68404:{{1,2}、{1,3}、{2,3}、{1,4}、{2,4}、{3,4}、{1,5}
199476: {{1,2},{1,3},{2,3},{1,4},{2,4},{3,4},{1,5},{2,5}}
723764: {{1,2},{1,3},{2,3},{1,4},{2,4},{3,4},{1,5},{2,5},{3,5}}
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