OFFSET
0,4
COMMENTS
Pattern: cycles of four successive terms. [this needs to be clarified, Joerg Arndt, Apr 16 2011]
LINKS
Clark Kimberling, fractal sequences.
FORMULA
From Paul Curtz, Apr 15 2011: (Start)
a(2*n) + a(1+2*n) = 1.
a(4*n) = -n, a(1+4*n) = n.
a(2+8*n) = 1 + 3*n, a(3+8*n) = 2+3*n.
a(2+2*n) = a(n) - a(1+2*n). (End)
CROSSREFS
KEYWORD
base,easy,sign
AUTHOR
Alexandre Wajnberg, Jun 20 2005
STATUS
approved