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 A277914 a(n) = number of zeros minus the number of ones among the n first terms of A076478. 1
 0, 1, 0, 1, 2, 3, 2, 1, 2, 1, 0, 1, 2, 3, 4, 5, 4, 5, 4, 5, 6, 5, 4, 3, 4, 5, 4, 5, 4, 3, 2, 3, 2, 1, 0, 1, 2, 3, 4, 5, 6, 7, 6, 7, 8, 7, 8, 9, 10, 9, 8, 9, 8, 9, 10, 11, 10, 11, 10, 11, 10, 9, 10, 11, 10, 9, 8, 7, 8, 9, 10, 9, 10, 11, 10, 9, 10, 9, 10, 9, 10 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,5 COMMENTS A036799 gives the positions of zeros in this sequence. Between two zeros, the graph of the sequence looks like a Takagi (or blancmange) curve. LINKS Rémy Sigrist, Table of n, a(n) for n = 0..10000 Wikipedia, Blancmange curve FORMULA a(n) = Sum_{i=0..n-1} (-1)^A076478(i) for any n>=0. CROSSREFS Cf. A076478, A036799. Sequence in context: A154556 A260228 A316657 * A126626 A137927 A321864 Adjacent sequences:  A277911 A277912 A277913 * A277915 A277916 A277917 KEYWORD nonn,base AUTHOR Rémy Sigrist, Nov 03 2016 STATUS approved

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Last modified May 27 18:56 EDT 2020. Contains 334664 sequences. (Running on oeis4.)