A285622 Positions of 0 in A285621; complement of A285623.

2, 3, 10, 11, 14, 15, 18, 19, 22, 23, 26, 27, 30, 31, 38, 39, 42, 43, 50, 51, 54, 55, 62, 63, 66, 67, 74, 75, 78, 79, 86, 87, 90, 91, 98, 99, 102, 103, 106, 107, 110, 111, 114, 115, 118, 119, 126, 127, 130, 131, 138, 139, 142, 143, 146, 147, 150, 151, 154

Offset

1,1

Comments

Conjecture: a(n)/n -> (3 + sqrt(5))/2.

Links

Clark Kimberling, Table of n, a(n) for n = 1..10000 [a(7783)=20382 -> 20378 and following corrected by Georg Fischer, Jun 04 2020]

Example

As a word, A285621 = 10011111100110..., in which 0 is in positions 2,3,10,11,14,...

Mathematica

s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {1, 0, 0, 1}}] &, {0}, 10] (* A285621 *)
Flatten[Position[s, 0]]  (* A285622 *)
Flatten[Position[s, 1]]  (* A285623 *)

Crossrefs

Cf. A285621, A285623.

Sequence in context: A344939 A278742 A250174 * A081706 A359251 A032804

Adjacent sequences: A285619 A285620 A285621 * A285623 A285624 A285625

Keyword

nonn,easy

Author

Clark Kimberling, May 01 2017

Status

approved