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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A190204 a(n) = [n*u + n*v] - [n*u] - [n*v], where u=sqrt(6), v=1/u, and []=floor. 3
0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..10000

MATHEMATICA

u = 6^(1/2); v = 1/u;

f[n_] := Floor[n*u + n*v] - Floor[n*u] - Floor[n*v]

t = Table[f[n], {n, 1, 120}] (* A190204 *)

Flatten[Position[t, 0]]      (* A190205 *)

Flatten[Position[t, 1]]      (* A190206 *)

PROG

(PARI) for(n=1, 30, print1(floor(n*(sqrt(6) + 1/sqrt(6))) - floor(n*sqrt(6)) - floor(n/sqrt(6)), ", ")) \\ G. C. Greubel, Dec 27 2017

(MAGMA) [Floor(n*(Sqrt(6) + 1/Sqrt(6))) - Floor(n*Sqrt(6)) - Floor(n/Sqrt(6)): n in [1..30]]; // G. C. Greubel, Dec 27 2017

CROSSREFS

Cf. A190205, A190206.

Sequence in context: A189219 A189008 A285515 * A189028 A301850 A189031

Adjacent sequences:  A190201 A190202 A190203 * A190205 A190206 A190207

KEYWORD

nonn

AUTHOR

Clark Kimberling, May 05 2011

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 October 17 14:15 EDT 2019. Contains 328113 sequences. (Running on oeis4.)