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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A287553 Positions of 1 in A053839. 5
2, 5, 12, 15, 17, 24, 27, 30, 36, 39, 42, 45, 51, 54, 57, 64, 65, 72, 75, 78, 84, 87, 90, 93, 99, 102, 105, 112, 114, 117, 124, 127, 132, 135, 138, 141, 147, 150, 153, 160, 162, 165, 172, 175, 177, 184, 187, 190, 195, 198, 201, 208, 210, 213, 220, 223, 225 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) - a(n-1) is in {1,2,3,4,5,6,7} for n >= 1; also, 4n - a(n) is in {0,1,2,3} for n >= 1.  The first 20 numbers 4n - a(n) are 2, 3, 0, 1, 3, 0, 1, 2, 0, 1, 2, 3, 1, 2, 3, 0, 3, 0, 1, 2, with

0 in positions given by A287554,

1 in positions given by A287555,

2 in positions given by A287552,

3 in positions given by A287553.

LINKS

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

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {0, 1, 2, 3}, 1 -> {1, 2, 3, 0}, 2 -> {2, 3, 0, 1}, 3 -> {3, 0, 1, 2}}] &, {0}, 9];         (* A053839 *)

Flatten[Position[s, 0]]; (* A287552 *)

Flatten[Position[s, 1]]; (* A287553 *)

Flatten[Position[s, 2]]; (* A287554 *)

Flatten[Position[s, 3]]; (* A287555 *)

CROSSREFS

Cf. A053839, A287552, A287554, A287555.

Sequence in context: A286240 A215974 A192524 * A102718 A219954 A066267

Adjacent sequences:  A287550 A287551 A287552 * A287554 A287555 A287556

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 31 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 September 16 07:19 EDT 2021. Contains 347469 sequences. (Running on oeis4.)