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A285130 Positions of 1 in A285128; complement of A285139. 3
1, 3, 5, 7, 13, 15, 17, 19, 21, 27, 29, 31, 33, 35, 41, 43, 45, 47, 49, 55, 61, 67, 73, 79, 81, 83, 85, 87, 93, 95, 97, 99, 101, 107, 109, 111, 113, 115, 121, 123, 125, 127, 129, 135, 137, 139, 141, 143, 149, 155, 161, 167, 173, 175, 177, 179, 181, 187, 189 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture: -1 < n*r - a(n) < 3 for n>=1, where r = 3.5621...

LINKS

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

EXAMPLE

As a word, A285128 = 10101010000010..., in which 1 is in positions 1,3,5,7,13,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {0, 0, 0, 0}}] &, {0}, 14]; (* A285125 *)

Flatten[Position[s, 0]];  (* A285126 *)

Flatten[Position[s, 1]];  (* A285127 *)

CROSSREFS

Cf. A285125, A285128, A285129.

Sequence in context: A152075 A092789 A092793 * A024909 A063241 A007591

Adjacent sequences:  A285127 A285128 A285129 * A285131 A285132 A285133

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 19 2017

STATUS

approved

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Last modified October 16 05:23 EDT 2019. Contains 328043 sequences. (Running on oeis4.)