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A284623 Positions of 0 in A284622; complement of A284626. 3
1, 4, 6, 7, 8, 10, 13, 15, 16, 18, 21, 22, 24, 25, 26, 28, 31, 32, 34, 35, 37, 40, 42, 43, 44, 46, 49, 51, 52, 54, 57, 58, 60, 61, 63, 66, 68, 69, 70, 72, 75, 76, 78, 79, 80, 82, 85, 87, 88, 90, 93, 94, 96, 97, 98, 100, 103, 104, 106, 107, 109, 112, 114, 115 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(n) - a(n-1) is in {1,2,3} for n>=2.  Conjecture: a(n)/n -> 9/5.

LINKS

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

EXAMPLE

As a word, A284622 = 011010001011010010..., in which 0 is in positions 1,4,6,7,8,10,...

MATHEMATICA

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

w = StringJoin[Map[ToString, s]]

w1 = StringReplace[w, {"0011" -> "0"}]

st = ToCharacterCode[w1] - 48  (* A284622 *)

Flatten[Position[st, 0]]  (* A284623 *)

Flatten[Position[st, 1]]  (* A284626 *)

CROSSREFS

Cf. A010060, A284622, A284626.

Sequence in context: A105432 A203168 A284820 * A139490 A030375 A081712

Adjacent sequences:  A284620 A284621 A284622 * A284624 A284625 A284626

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 10 2017

STATUS

approved

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Last modified September 22 08:23 EDT 2018. Contains 315270 sequences. (Running on oeis4.)