A285623 Positions of 1 in A285621; complement of A285622.

1, 4, 5, 6, 7, 8, 9, 12, 13, 16, 17, 20, 21, 24, 25, 28, 29, 32, 33, 34, 35, 36, 37, 40, 41, 44, 45, 46, 47, 48, 49, 52, 53, 56, 57, 58, 59, 60, 61, 64, 65, 68, 69, 70, 71, 72, 73, 76, 77, 80, 81, 82, 83, 84, 85, 88, 89, 92, 93, 94, 95, 96, 97, 100, 101, 104

Offset

1,2

Comments

Conjecture: a(n)/n -> (1 + sqrt(5))/2 = golden ratio (A001622).

Links

Table of n, a(n) for n=1..66.

Example

As a word, A285621 = 10011111100110..., in which 1 is in positions 1,4,5,6,7,...

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. A001622, A285621, A285622.

Sequence in context: A067187 A321353 A161674 * A213518 A214419 A189481

Adjacent sequences: A285620 A285621 A285622 * A285624 A285625 A285626

Keyword

nonn,easy

Author

Clark Kimberling, May 01 2017

Status

approved