q.jiawei's submissions for 1245 蛇形数表

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q.jiawei
on Jan. 20, 2010, 1:58 p.m.
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q.jiawei
on Jan. 20, 2010, 1:53 p.m.
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q.jiawei
on Jan. 20, 2010, 1:27 p.m.
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