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%I #7 Apr 28 2014 15:26:57
%S 1,1,2,2,3,3,4,5,6,7,8,9,11,12,14,15,17,19,21,23,25,28,30,33,35,38,41,
%T 44,47,50,54,57,61,64,69,72,77,80,85,89,94,98,103,108,113,118,123,129,
%U 134,140,145,152,157,164,169,177,182,190,195,203,209,217,223,231,238
%N a(0)=a(1)=1 a(n)=floor(sqrt(a(n-1)))+a(n-2).
%F a(n) is asymptotic to n^2/16
%t RecurrenceTable[{a[0]==a[1]==1,a[n]==Floor[Sqrt[a[n-1]]]+a[n-2]},a,{n,70}] (* _Harvey P. Dale_, Apr 28 2014 *)
%K nonn
%O 0,3
%A _Benoit Cloitre_, Oct 25 2002
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