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%I #4 Mar 30 2012 18:51:57
%S 0,1,1,1,2,3,3,4,3,3,3,2,4,4,4,5,5,5,3,3,3,3,5,5,2,3,5,5,6,5,6,1,3,3,
%T 3,3,3,4,3,3,4,7,3,7,5,5,5,4,5,7,2,5,4,4,5,5,4,5,4,5,2,4,4,4,4,5,5,4,
%U 4,5,5,7,7,4,5,7,7,5,7,7,8,7,7,3,3,5,5,3,6,3,6,6,3,5,5,5,3,6,6
%N Number of 3's in A020458(n).
%K nonn,base
%O 1,5
%A _Paul Curtz_, Jun 05 2008
%E More terms from _Ray Chandler_, Aug 06 2008
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