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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A092106 Fractal mountains in base 3. 0
0, 1, 3, 2, 2, 3, 1, 0, 0, 1, 3, 6, 6, 7, 9, 8, 8, 9, 11, 14, 18, 19, 21, 24, 24, 25, 27, 26, 26, 27, 25, 24, 24, 21, 19, 18, 18, 19, 21, 20, 20, 21, 19, 18, 18, 19, 21, 24, 24, 25, 27, 26, 26, 27, 25, 24, 24, 21, 19, 18, 14, 11, 9, 8, 8, 9, 7, 6, 6, 3, 1, 0, 0, 1, 3, 2, 2, 3, 1, 0, 0, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

The graph of sequence presents fractal aspects.

LINKS

Table of n, a(n) for n=0..81.

FORMULA

a(n)=a(n, 3) where a(n, m)=sum(i=0, n, sum(k=0, i, (-1)^k*(floor(i/m^k)-m*floor(i/m^(k+1)))))

CROSSREFS

Cf. A005536 (fractal mountains in base 2).

Sequence in context: A217956 A105198 A133882 * A278885 A183049 A178086

Adjacent sequences:  A092103 A092104 A092105 * A092107 A092108 A092109

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Mar 29 2004

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 November 13 12:45 EST 2019. Contains 329094 sequences. (Running on oeis4.)