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%I #2 Mar 30 2012 16:51:02
%S 90,100,50,60,30,40,20,30,15,25
%N Add 10, divide by 2, repeat.
%C A147675-A147678 are from a quiz that someone asked me to help them with.
%K nonn,fini,full
%O 1,1
%A _N. J. A. Sloane_, Apr 21 2009