login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A285670 Positions of 1 in A285668; complement of A285669. 3
1, 2, 4, 5, 6, 8, 9, 10, 11, 12, 14, 15, 16, 18, 19, 20, 22, 23, 24, 25, 26, 28, 29, 30, 32, 33, 34, 36, 37, 38, 40, 41, 42, 44, 45, 46, 47, 48, 50, 51, 52, 54, 55, 56, 58, 59, 60, 61, 62, 64, 65, 66, 68, 69, 70, 72, 73, 74, 75, 76, 78, 79, 80, 82, 83, 84 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture:  -1 < n*r - a(n) < 4 for n>=1, where r = (1 + sqrt(17))/4.

LINKS

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

EXAMPLE

As a word, A285668 = 11011101..., in which 1 is in positions 1,2,4,5,6,8,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {1, 1, 0, 1}}] &, {0}, 9]  (* A285668 *)

Flatten[Position[s, 0]]  (* A285669 *)

Flatten[Position[s, 1]]  (* A285670 *)

CROSSREFS

Cf. A285668, A285669.

Sequence in context: A226946 A288708 A039138 * A030124 A064318 A286924

Adjacent sequences:  A285667 A285668 A285669 * A285671 A285672 A285673

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 02 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 June 25 22:16 EDT 2019. Contains 324358 sequences. (Running on oeis4.)