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!)
A288427 Positions of 0 in A288426; complement of A288428. 3
1, 3, 4, 5, 7, 10, 11, 14, 15, 16, 19, 20, 21, 23, 27, 28, 29, 31, 34, 35, 39, 40, 41, 43, 46, 47, 50, 51, 52, 56, 57, 58, 60, 63, 64, 67, 68, 69, 72, 73, 74, 76, 81, 82, 83, 85, 88, 89, 92, 93, 94, 97, 98, 99, 101, 105, 106, 107, 109, 112, 113, 118, 119 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture:  a(n)/n -> 1.93..., and if m denotes this number, then -1 < m - a(n)/n < 1 for n >= 1.

LINKS

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

MATHEMATICA

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

w[n_] := StringReplace[w[n - 1], {"00" -> "0101", "10" -> "100"}]

Table[w[n], {n, 0, 8}]

st = ToCharacterCode[w[11]] - 48   (* A288426 *)

Flatten[Position[st, 0]]  (* A288427 *)

Flatten[Position[st, 1]]  (* A288428 *)

CROSSREFS

Cf. A288426, A288428.

Sequence in context: A047365 A048342 A159560 * A030502 A201025 A288451

Adjacent sequences:  A288424 A288425 A288426 * A288428 A288429 A288430

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 10 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 21:47 EST 2020. Contains 331066 sequences. (Running on oeis4.)