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A285129 Positions of 0 in A285128; complement of A285130. 3
2, 4, 6, 8, 9, 10, 11, 12, 14, 16, 18, 20, 22, 23, 24, 25, 26, 28, 30, 32, 34, 36, 37, 38, 39, 40, 42, 44, 46, 48, 50, 51, 52, 53, 54, 56, 57, 58, 59, 60, 62, 63, 64, 65, 66, 68, 69, 70, 71, 72, 74, 75, 76, 77, 78, 80, 82, 84, 86, 88, 89, 90, 91, 92, 94, 96 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture: -1 < n*r - a(n) < 1 for n>=1, where r = 1.3903...

LINKS

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

EXAMPLE

As a word, A285128 = 10101010000010..., in which 0 is in positions 2,4,6,8,9,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {0, 0, 0, 0}}] &, {0}, 14]; (* A285125 *)

Flatten[Position[s, 0]];  (* A285126 *)

Flatten[Position[s, 1]];  (* A285127 *)

CROSSREFS

Cf. A285125, A285128, A285130.

Sequence in context: A263800 A168496 A328077 * A160766 A192515 A189466

Adjacent sequences:  A285126 A285127 A285128 * A285130 A285131 A285132

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 19 2017

STATUS

approved

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Last modified November 13 15:41 EST 2019. Contains 329106 sequences. (Running on oeis4.)