OFFSET
2,1
FORMULA
It seems that sum(k=2, n, a(k)) is asymptotic to 3n
PROG
(PARI) a(n)=if(n<0, 0, s=n-1/4; c=0; while(frac(s)>0, s=s*ceil(s); c++); c)
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Apr 13 2003
STATUS
approved