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 A284776 Positions of 0 in A284775; complement of A284777. 6
 1, 3, 4, 7, 9, 11, 12, 15, 16, 19, 21, 22, 25, 27, 28, 31, 33, 35, 36, 39, 40, 43, 45, 47, 48, 51, 52, 55, 57, 58, 61, 63, 65, 66, 69, 70, 73, 75, 76, 79, 81, 83, 84, 87, 88, 91, 93, 94, 97, 99, 100, 103, 105, 107, 108, 111, 112, 115, 117, 119, 120, 123, 124 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS 2n-a(n) is in {1,2} for n>=1. LINKS Clark Kimberling, Table of n, a(n) for n = 1..10000 EXAMPLE As a word, A284775 = 0100110..., in which 0 is in positions 1,3,4,7,... MATHEMATICA s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {0, 0, 1, 1}}] &, {0}, 7]; (* A284775 *) Flatten[Position[s, 0]]; (* A284776 *) Flatten[Position[s, 1]]; (* A284777 *) Position[Flatten[SubstitutionSystem[{0->{0, 1}, 1->{0, 0, 1, 1}}, {0}, {5}]], 0]//Flatten (* Harvey P. Dale, Jun 18 2022 *) CROSSREFS Cf. A284775, A284777. Sequence in context: A095043 A019990 A288634 * A047544 A272909 A035267 Adjacent sequences: A284773 A284774 A284775 * A284777 A284778 A284779 KEYWORD nonn,easy AUTHOR Clark Kimberling, Apr 14 2017 STATUS approved

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Last modified June 21 12:34 EDT 2024. Contains 373544 sequences. (Running on oeis4.)