A076902 a(1)=1, a(n) = floor(n/2) - a(floor(n/2)).
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, 10, 10, 11, 11, 11, 11, 12, 12, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 19, 19, 20, 20, 22, 22, 23, 23, 23, 23, 24, 24, 25, 25, 26, 26, 26, 26
Offset: 1
Keywords
Formula
a(n) is asymptotic to n/3; conjecture: abs(a(n)-n/3) < log(n+1).
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