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A285091 Positions of 0 in A284848; complement of A285092. 3
1, 4, 6, 7, 10, 13, 15, 16, 18, 22, 24, 25, 28, 32, 34, 35, 37, 40, 42, 43, 46, 49, 51, 52, 54, 58, 60, 61, 63, 66, 68, 69, 72, 76, 78, 79, 82, 85, 87, 88, 90, 94, 96, 97, 100, 104, 106, 107, 109, 112, 114, 115, 118, 122, 124, 125, 128, 131, 133, 134, 136 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(n) - a(n-1) is in {1,2,3,4} for n>=2.  Conjecture: a(n)/n -> 9/4.

LINKS

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

EXAMPLE

As a word, A284848 = 01101001101101001011101..., in which 0 is in positions 1,4,6,7,10,...

MATHEMATICA

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

w = StringJoin[Map[ToString, s]]

w1 = StringReplace[w, {"1100" -> "1"}]

st = ToCharacterCode[w1] - 48  (* A284848 *)

Flatten[Position[st, 0]]  (* A285091 *)

Flatten[Position[st, 1]]  (* A285092 *)

CROSSREFS

Cf. A010060, A284848, A285092.

Sequence in context: A089532 A285254 A103401 * A286485 A277572 A107622

Adjacent sequences:  A285088 A285089 A285090 * A285092 A285093 A285094

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 10 2017

STATUS

approved

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Last modified March 25 01:17 EDT 2019. Contains 321450 sequences. (Running on oeis4.)