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%I #4 Mar 30 2012 18:50:37
%S 1,1,2,3,2,3,3,3,2,3,3,5,3,4,3,3,2,3,3,6,3,6,5,3,3,5,5,2,3,3,3,3,2,3,
%T 3,6,3,8,6,3,3,2,9,4,5,6,5,5,3,5,5,4,5,6,2,5,3,5,3,6,3,6,3,3,2,3,3,6,
%U 3,7,6,10,3,9,11,5,7,8,4,5,3,9,2,8,9,7,4,6,5,6,6,3,5,5,5,5,3,5,5,3,5,9,11,7
%N a(n) = if n<=1 then 1 else smallest k>1 such that in binary representation n is contained in n^k.
%C A094543(n) = n^a(n).
%e n=6: 6='110' is not contained in 6^2='100100', but in 6^3='11011000', therefore a(6)=3.
%Y Cf. A045537, A007088.
%K nonn,base
%O 0,3
%A _Reinhard Zumkeller_, Aug 24 2003
%E Extended and corrected by _Reinhard Zumkeller_, May 08 2004
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