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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A188189 [nr]-[kr]-[nr-kr], where r=sqrt(5), k=2, [ ]=floor. 3
1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1

COMMENTS

See A188014.

LINKS

Table of n, a(n) for n=1..123.

FORMULA

a(n)=[nr]-[2r]-[nr-2r], where r=sqrt(5).

MATHEMATICA

r=5^(1/2)); k=2;

t=Table[Floor[n*r]-Floor[(n-k)*r]-Floor[k*r], {n, 1, 220}]   (*A188189*)

Flatten[Position[t, 0]]  (*A188190*)

Flatten[Position[t, 1]]  (*A188191*)

CROSSREFS

Cf. A188014, A188190, A188191.

Sequence in context: A068433 A266895 A088592 * A029692 A309849 A071906

Adjacent sequences:  A188186 A188187 A188188 * A188190 A188191 A188192

KEYWORD

nonn

AUTHOR

Clark Kimberling, Mar 23 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 20 20:13 EDT 2019. Contains 328272 sequences. (Running on oeis4.)