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 A286904 Positions of 0 in A286903; complement of A286905. 3
 3, 4, 7, 8, 12, 13, 16, 17, 21, 22, 25, 26, 29, 30, 34, 35, 38, 39, 43, 44, 47, 48, 51, 52, 56, 57, 60, 61, 65, 66, 69, 70, 74, 75, 78, 79, 82, 83, 87, 88, 91, 92, 96, 97, 100, 101, 104, 105, 109, 110, 113, 114, 118, 119, 122, 123, 127, 128, 131, 132, 135 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(n) - a(n-1) is in {1,3,4} for n>=2, and a(n)/n -> (3 + sqrt(2))/2. LINKS Clark Kimberling, Table of n, a(n) for n = 1..10000 EXAMPLE As a word, A286804 = 11001100111001100111001..., in which 0 is in positions 3,4,7,8,12,... MATHEMATICA s = Nest[Flatten[# /. {0 -> 1, 1 -> {1, 1, 0}}] &, {1}, 7] (* A080764 *) w = StringJoin[Map[ToString, s]] w1 = StringReplace[w, {"0" -> "00"}] st = ToCharacterCode[w1] - 48 ; (* A286903 *) Flatten[Position[st, 0]]; (* A286904 *) Flatten[Position[st, 1]]; (* A286905 *) CROSSREFS Cf. A080764, A286903, A286905. Sequence in context: A211220 A051201 A026449 * A282166 A165157 A182079 Adjacent sequences: A286901 A286902 A286903 * A286905 A286906 A286907 KEYWORD nonn,easy AUTHOR Clark Kimberling, May 17 2017 STATUS approved

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Last modified May 26 09:40 EDT 2024. Contains 372824 sequences. (Running on oeis4.)