Participant zhangjj

Signature graphic: http://uotd.org/signature.py?cpid=58f7dd63a5b4be01317e200a57342ce0
Small signature: http://uotd.org/signature_sm.py?cpid=58f7dd63a5b4be01317e200a57342ce0

Collatz Conjecture
Mon 17 May 2010 01:00:00 AM CEST		 No picture Name: zhangjj
Country: China
Team: Team China