1,4

Table of n, a(n) for n=1..77.

a(n) is asymptotic to n/3; conjecture: abs(a(n)-n/3) < log(n+1)

a(n) = A068639(n) - A065359(n) + (-1)^[log2(n)] = A050292(n) - A068639(n) + (-1)^[log2(n)]. - Ralf Stephan, Oct 27 2003

Cf. A050292.

Sequence in context: A130326 A059906 A112046 * A287271 A290884 A049113

Adjacent sequences: A076899 A076900 A076901 * A076903 A076904 A076905

nonn

Benoit Cloitre, Nov 26 2002

approved