OFFSET
1,1
COMMENTS
For any a(1)>1, a(n)/a(n-1)=>2; for large n's, a(n)=>c*2^n with c depending on a(1)>1; for a(1)=2 c=0.270675.
MATHEMATICA
NestList[2#-Floor[Sqrt[ # ]]&, 2, 30]
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Nov 16 2006
STATUS
approved