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A285980 Positions of 1 in A285978; complement of A285979. 3
2, 3, 5, 6, 7, 8, 9, 10, 12, 13, 15, 16, 17, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 43, 45, 46, 47, 48, 49, 50, 52, 53, 55, 56, 57, 59, 60, 61, 62, 63, 65, 66, 67, 69, 70, 72, 73, 74, 75, 76, 77, 79, 80, 81, 82, 83 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture: a(n)/n -> 5/4.

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..10000

EXAMPLE

As a word, A285978 = 0110111111011011101111101..., in which 1 is in positions 2,3,5,6,7,8,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {1, 0}}] &, {0}, 9] (* Thue-Morse, A010060 *)

w = StringJoin[Map[ToString, s]]

w1 = StringReplace[w, {"00" -> "1"}]

st = ToCharacterCode[w1] - 48 (* A285978  *)

Flatten[Position[st, 0]]  (* A285979 *)

Flatten[Position[st, 1]]  (* A285980 *)

CROSSREFS

Cf. A010060, A285978, A285979.

Sequence in context: A039159 A003251 A288315 * A268231 A039167 A247360

Adjacent sequences:  A285977 A285978 A285979 * A285981 A285982 A285983

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 07 2017

STATUS

approved

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Last modified June 28 21:04 EDT 2022. Contains 354907 sequences. (Running on oeis4.)