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%I A093832 #20 Oct 15 2023 09:27:29
%S A093832 1,2,3,5,10,15,20,35,51,52,85,100,230,247,370,425,489,725,730,1073,
%T A093832 1310,1865,1997,2480,2831,3072,3424,3750,3861,3921,4025,4339,4771,
%U A093832 4885,5559,5949,6203,6411,7045,7084,7410,7605,8931,9308,9435,9646,10829,10930
%N A093832 Values of r such that N(r)/r^2 > Pi, where N(r) is the number of integer lattice points (x,y) inside or on a circle of radius r.
%H A093832 David Wasserman, <a href="/A093832/b093832.txt">Table of n, a(n) for n = 1..160</a>
%H A093832 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/GausssCircleProblem.html">Gauss's Circle Problem</a>.
%o A093832 (PARI) A000328(n) = local(x, y, c, nn); c = 0; x = 0; nn = n*n; y = n; while (x < y, c += x; y--; x = sqrtint(nn - y*y)); 4*(n - y) + 8*c + (2*y + 1)^2; for (n = 1, 100000, if (A000328(n) > Pi*n*n, print(n))); \\ _David Wasserman_, Dec 05 2006
%Y A093832 Cf. A000328, A000328, A093837.
%K A093832 nonn
%O A093832 1,2
%A A093832 _Eric W. Weisstein_, Apr 17 2004
%E A093832 Corrected and extended by _David Wasserman_, Dec 05 2006
%E A093832 Name corrected by _Luis Mendo_, Sep 24 2023

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