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 A151758 G.f.: Theta^2-Theta, where Theta = Sum_{k>=0} x^(2^k). 5
 0, -1, 0, 2, 0, 2, 2, 0, 0, 2, 2, 0, 2, 0, 0, 0, 0, 2, 2, 0, 2, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 0, 2, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 0, 2, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 COMMENTS If we omit the "-x" term and divide by 2, we get the characteristic function of the numbers with binary weight 2 (A018900, A151774). LINKS CROSSREFS Cf. A000079, A073267, A151759, A151760, A151761, A151762, A018900, A151774. Sequence in context: A028928 A260149 A091379 * A164272 A164273 A106277 Adjacent sequences:  A151755 A151756 A151757 * A151759 A151760 A151761 KEYWORD sign AUTHOR N. J. A. Sloane, Jun 22 2009 STATUS approved

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Last modified May 24 01:29 EDT 2019. Contains 323528 sequences. (Running on oeis4.)