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A285260 Positions of 1 in A285258; complement of A285259. 3
1, 4, 5, 8, 9, 11, 14, 15, 17, 20, 21, 23, 25, 28, 29, 32, 33, 35, 37, 40, 41, 44, 45, 47, 50, 51, 53, 56, 57, 59, 61, 64, 65, 68, 69, 71, 73, 76, 77, 80, 81, 83, 86, 87, 89, 91, 94, 95, 98, 99, 101, 104, 105, 107, 110, 111, 113, 115, 118, 119, 122, 123, 125 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture: 2n - a(n) is in {0,1} for n>=1.

LINKS

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

EXAMPLE

As a word, A285258 = 10011001101..., in which 1 is in positions 1,4,5,8,9,11,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {0, 1, 1, 0}}] &, {0}, 11]; (* A285258 *)

Flatten[Position[s, 0]];  (* A285259 *)

Flatten[Position[s, 1]];  (* A285260 *)

CROSSREFS

Cf. A285255, A285258, A285259.

Sequence in context: A128217 A288671 A284906 * A190671 A042948 A126001

Adjacent sequences:  A285257 A285258 A285259 * A285261 A285262 A285263

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 24 2017

STATUS

approved

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Last modified November 19 12:38 EST 2018. Contains 317351 sequences. (Running on oeis4.)