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May 12, 2011 at 23:54 comment added Eric Naslund This technique is very useful. I have already used it for 2 other problems. I'll keep generating series in mind in the future.
May 11, 2011 at 15:27 comment added Eric Naslund Excellent, this is very nice! Thanks.
May 11, 2011 at 15:22 vote accept Eric Naslund
May 11, 2011 at 5:51 history edited Qiaochu Yuan CC BY-SA 3.0
added 192 characters in body; added 44 characters in body
May 11, 2011 at 5:46 history answered Qiaochu Yuan CC BY-SA 3.0