A285253 Positions of 0 in A285252; complement of A285254.

2, 3, 5, 8, 9, 11, 13, 15, 18, 19, 21, 24, 26, 27, 29, 32, 33, 35, 37, 39, 42, 44, 45, 47, 50, 51, 53, 56, 57, 59, 62, 63, 65, 67, 69, 72, 73, 75, 78, 80, 81, 83, 86, 87, 89, 91, 93, 96, 98, 99, 101, 104, 105, 107, 109, 111, 114, 116, 117, 119, 122, 123, 125

Offset

1,1

Comments

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

See the comments of A285250 for a proof of this conjecture. - Michel Dekking, Oct 07 2020

Links

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

Example

As a word, A285252 = 100101100101..., in which 0 is in positions 2,3,5,8,9,11,...

Mathematica

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {0, 1, 0, 1}}] &, {0}, 11]; (* A285252 *)
Flatten[Position[s, 0]];  (* A285253 *)
Flatten[Position[s, 1]];  (* A285254 *)

Crossrefs

Cf. A285250, A285252, A285254.

Sequence in context: A285092 A027756 A119863 * A047254 A226815 A284890

Adjacent sequences: A285250 A285251 A285252 * A285254 A285255 A285256

Keyword

nonn,easy

Author

Clark Kimberling, Apr 23 2017

Status

approved