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Table of n, a(n) for n=1..89.
(PARI) contfrac(solve(q=1.7, 1.8, sum(n=1, 2000, (subst(Pol(binary(n)), x, 1)%2)/q^n)-1))
Sequence in context: A209859 A262218 A245538 * A251621 A016468 A134839
Adjacent sequences: A080887 A080888 A080889 * A080891 A080892 A080893
Ralf Stephan, Mar 30 2003