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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A285354 Positions of 1 in A285351; complement of A285353. 3
2, 4, 5, 6, 8, 10, 11, 12, 14, 15, 17, 18, 20, 22, 23, 24, 26, 28, 29, 30, 32, 33, 35, 36, 38, 40, 41, 42, 44, 45, 47, 49, 50, 51, 53, 54, 56, 58, 59, 60, 62, 64, 65, 66, 68, 69, 71, 72, 74, 76, 77, 78, 80, 82, 83, 84, 86, 87, 89, 90, 92, 94, 95, 96, 98, 99 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture: 3n/2 +1/2 - a(n) is in {0,1/2,1} for n>=1.

LINKS

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

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {1, 1, 0, 0}}] &, {0}, 13] (* A285345 *)

u = Flatten[Position[s, 0]]  (* A285346 *)

v = Flatten[Position[s, 1]]  (* A285347 *)

t1 = Table[2*n + 1 - u[[n]], {n, 1, Length[u]}] (* A285351 *)

t2 = Table[2*n - 1 - v[[n]], {n, 1, Length[v]}] (* A285352 *)

Flatten[Position[t1, 0]]  (* A285353 *)

Flatten[Position[t1, 1]]  (* A285354 *)

Flatten[Position[t2, 0]]  (* A189668 *)

Flatten[Position[t2, 1]]  (* A189679 *)

CROSSREFS

Cf. A284345, A285346, A285351, A285354.

Sequence in context: A115836 A176554 A284895 * A050505 A047262 A285143

Adjacent sequences:  A285351 A285352 A285353 * A285355 A285356 A285357

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Apr 25 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 December 9 03:27 EST 2019. Contains 329872 sequences. (Running on oeis4.)