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%I #13 Jun 15 2018 21:29:21
%S 1,3,6,10,16,24,33,45,60,76,96,120,145,175,210,246,288,336,385,441,
%T 504,568,640,720,801,891,990,1090,1200,1320,1441,1573,1716,1860,2016,
%U 2184,2353,2535,2730,2926,3136,3360,3585,3825,4080,4336
%N Number of numbers m <= n such that floor(sqrt(m)) divides m.
%H Harry J. Smith, <a href="/A066377/b066377.txt">Table of n, a(n) for n = 1..1000</a>
%F Empirical g.f.: -x*(x^3-x^2-x-1) / ((x-1)^4*(x^2+x+1)^2). [_Colin Barker_, Jan 12 2013]
%o (PARI) { n=0; a=0; for (m=1, 10^9, if (m%floor(sqrt(m)) == 0, a+=m; write("b066377.txt", n++, " ", a); if (n==1000, return)) ) } \\ _Harry J. Smith_, Feb 12 2010
%Y Partial sums of A006446.
%K nonn
%O 1,2
%A _N. J. A. Sloane_, Dec 23 2001
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