OFFSET
0,6
COMMENTS
u(n) diverges to + infinity if z<(5-sqrt(5))/10; - infinity if z>(5-sqrt(5))/10
FORMULA
a(n) = floor( (1/10)*(n*(5-sqrt(5)) - 15+3*sqrt(5))); u(n) - z*n -> (15-3*sqrt(5))/10
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Nov 25 2002
STATUS
approved