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 A131852 Imaginary part of the function z defined in A131851. 12
 0, 0, 1, 1, 0, 0, 1, 1, -1, -1, 0, 0, -1, -1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, -1, -1, 0, 0, -1, -1, 0, 0, 1, 1, 2, 2, 1, 1, 2, 2, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 2, 2, 1, 1, 2, 2, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, -1, -1, 0, 0, -1, -1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, -1, -1, 0, 0, -1, -1, 0, 0, 1, 1, 2, 2, 1, 1, 2, 2, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 2, 2, 1, 1, 2, 2, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,35 COMMENTS a(A000079(n)) = A056594(n+3); a(A131855(n)) = 0; a(A131862(n)) > 0; a(A131857(n)) = 1; a(A131864(n)) < 0; for n > 0: a(A098704(n+1)) = n and abs(a(m)) < n for m < A098704(n+1). LINKS R. Zumkeller, Table of n, a(n) for n = 0..10000 MATHEMATICA z[0] = 0; z[n_] := z[n] = z[Floor[n/2]]*I + Mod[n, 2]; Table[z[n] // Im, {n, 0, 120}] (* Jean-François Alcover, Mar 02 2019 *) CROSSREFS Sequence in context: A231734 A231735 A016429 * A139352 A214039 A089679 Adjacent sequences:  A131849 A131850 A131851 * A131853 A131854 A131855 KEYWORD sign AUTHOR Reinhard Zumkeller, Jul 22 2007 STATUS approved

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Last modified December 5 16:12 EST 2019. Contains 329753 sequences. (Running on oeis4.)