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A285306 Positions of 0 in A285305; complement of A285307. 3
2, 3, 6, 8, 10, 11, 14, 15, 18, 20, 21, 24, 26, 27, 30, 32, 34, 35, 38, 39, 42, 44, 46, 47, 50, 51, 54, 56, 57, 60, 62, 64, 65, 68, 69, 72, 74, 75, 78, 80, 82, 83, 86, 87, 90, 92, 93, 96, 98, 99, 102, 104, 106, 107, 110, 111, 114, 116, 118, 119, 122, 123 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Let s(n) = 2n - a(n).  It appears that s(n) is a 01-sequence with 0 in positions given by A189665 and 1 in positions given by A189660.

LINKS

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

EXAMPLE

As a word, A285305 = 1001101..., in which 0 is in positions 2,3,6,8,10,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {0, 1, 1, 1}}] &, {0}, 10]; (* A285274 *)

Flatten[Position[s, 0]];  (* A285275 *)

Flatten[Position[s, 1]];  (* A285276 *)

CROSSREFS

Cf. A189660, A189665, A285305, A285307.

Sequence in context: A146768 A211370 A122479 * A047403 A286051 A093193

Adjacent sequences:  A285303 A285304 A285305 * A285307 A285308 A285309

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 25 2017

STATUS

approved

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Last modified December 10 20:23 EST 2019. Contains 329909 sequences. (Running on oeis4.)