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 A286804 {000->null}-transform of the Pell word, A171588. 6
 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1 COMMENTS A171588 = 001001000100100010010010001001..., and deleting each occurrence of 000 gives 00100110011001001100110..., in which the positions of 0 are given by A286805, and of 1, by A286806. LINKS Clark Kimberling, Table of n, a(n) for n = 1..10000 MATHEMATICA s = Nest[Flatten[# /. {0 -> {0, 0, 1}, 1 -> {0}}] &, {0}, 16]; (* Pell word, A171588 *) w = StringJoin[Map[ToString, s]]; w1 = StringReplace[w, {"000" -> ""}]; st = ToCharacterCode[w1] - 48 ; (* A286804 *) Flatten[Position[st, 0]];  (* A286805 *) Flatten[Position[st, 1]];  (* A286806 *) CROSSREFS Cf. A171588, A286805, A286806. Sequence in context: A288213 A308187 A289007 * A188071 A189640 A289057 Adjacent sequences:  A286801 A286802 A286803 * A286805 A286806 A286807 KEYWORD nonn,easy AUTHOR Clark Kimberling, May 16 2017 STATUS approved

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Last modified June 19 23:39 EDT 2019. Contains 324222 sequences. (Running on oeis4.)