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%I #11 Apr 18 2023 14:54:22
%S 1,0,0,2,2,3,3,2,2,3,3,3,3,4,4,6,6,7,7,7,7,8,8,9,9,10,10,10,10,11,11,
%T 10,10,11,11,11,11,12,12,13,13,14,14,14,14,15,15,15,15,16,16,16,16,17,
%U 17,18,18,19,19,19,19,20,20,22,22,23,23,23,23,24,24,25,25,26,26,26,26
%N a(1)=1, a(n) = floor(n/2) - a(floor(n/2)).
%F a(n) is asymptotic to n/3; conjecture: abs(a(n)-n/3) < log(n+1).
%F a(n) = A068639(n) - A065359(n) + (-1)^floor(log_2(n)) = A050292(n) - A068639(n) + (-1)^floor(log_2(n)). - _Ralf Stephan_, Oct 27 2003
%Y Cf. A050292, A065359, A068639.
%K nonn
%O 1,4
%A _Benoit Cloitre_, Nov 26 2002
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