OFFSET
0,3
COMMENTS
The graph of sequence presents fractal aspects.
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
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Mar 29 2004
STATUS
approved