login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A289130 Positions of 1 in A289128; complement of A289129. 3
3, 6, 9, 10, 13, 15, 17, 20, 21, 23, 24, 26, 27, 30, 32, 34, 36, 38, 40, 42, 45, 46, 48, 49, 51, 52, 54, 55, 57, 58, 60, 61, 63, 64, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 98, 99, 101, 102, 104, 105, 107, 108, 110, 111, 113, 114, 116 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture:  a(n)/n -> 5/3..., and -4/3 < 5/3 - a(n)/n < 0 for n >= 1.

LINKS

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

MATHEMATICA

z = 11; (* number of iterates *)

s = {0, 0}; w[0] = StringJoin[Map[ToString, s]];

w[n_] := StringReplace[w[n - 1], {"00" -> "0010", "01" -> "011", "10" -> "010"}]

TableForm[Table[w[n], {n, 0, 10}]]

st = ToCharacterCode[w[z]] - 48   (* A289128 *)

Flatten[Position[st, 0]]  (* A289129 *)

Flatten[Position[st, 1]]  (* A289130 *)

CROSSREFS

Cf. A289128, A289129.

Sequence in context: A206284 A268328 A247575 * A188299 A187577 A111359

Adjacent sequences:  A289127 A289128 A289129 * A289131 A289132 A289133

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 28 2017

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 19 09:35 EST 2020. Contains 331048 sequences. (Running on oeis4.)