|
%I #2 Mar 30 2012 17:26:23
%S 2,3,5,8,14,25,45,84,159,306,595,1166,2298,4549,9031,17967,35800,
%T 71411,142555,284733,568933,1137112,2273158,4544809,9087487,18171960,
%U 36339658,72673288,145338052,290664049,581311050
%N a(1)=2, a(n)=2*a(n-1)-floor(sqrt(a(n-1))).
%C 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.
%t NestList[2#-Floor[Sqrt[ # ]]&,2,30]
%K nonn
%O 1,1
%A _Zak Seidov_, Nov 16 2006
|
