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例子
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a(1)=1到a(10)=13杂波:
{{1}} {{2}} {{3}} {{4}} {{5}} {{6}} {{7}}
{{1,2}}{1,3}}{1,4}}{1,5}}{1,6}}
{{2,3}} {{2,4}} {{2,5}}
{{1,2,3}} {{3,4}}
{{1,2,4}}
{{1,2},{1,3}}
.
{{8}} {{9}} {{10}}
{{1,7}} {{1,8}} {{1,9}}
{{2,6}} {{2,7}} {{2,8}}
{{3,5}} {{3,6}} {{3,7}}
{{1,2,5}} {{4,5}} {{4,6}}
{{1,3,4}} {{1,2,6}} {{1,2,7}}
{{1,2},{1,4}} {{1,3,5}} {{1,3,6}}
{{1,2},{2,3}} {{2,3,4}} {{1,4,5}}
{{1,2},{1,5}} {{2,3,5}}
{{1,2},{2,4}} {{1,2,3,4}}
{{1,3},{1,4}} {{1,2},{1,6}}
{{1,3},{2,3}} {{1,2},{2,5}}
{{1,3},{1,5}}
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