Search: id:A000323
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%I A000323 M3787 N1543
%S A000323 5,9,21,37,69,69,89,137,177,421,481,657,749,885,1085,1305,1353,
%T A000323 1489,1861,2617,2693,3125,5249,5761,7129,8109,9465,9465,10717,12401,12401,
%U A000323 16237,16237,24833,30725,35237,46701,47441,47441,61493,67797,67805,67805
%N A000323 Let A(n) = #{(i,j): i^2 + j^2 <= n}, V(n) = Pi*n, P(n) = A(n) - V(n); 
               A000099 gives values of n where |P(n)| sets a new record; sequence 
               gives A(A000099(n)).
%D A000323 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A000323 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A000323 W. C. Mitchell, The number of lattice points in a k-dimensional hypersphere, 
               Math. Comp., 20 (1966), 300-310.
%H A000323 David W. Wilson, <a href="b000323.txt">Table of n, a(n) for n = 1..200</
               a>
%Y A000323 Cf. A000099, A000036, A000092, A000413, A000223.
%Y A000323 Sequence in context: A147018 A081883 A049744 this_sequence A146131 A083943 
               A097074
%Y A000323 Adjacent sequences: A000320 A000321 A000322 this_sequence A000324 A000325 
               A000326
%K A000323 nonn
%O A000323 1,1
%A A000323 N. J. A. Sloane (njas(AT)research.att.com).
%E A000323 Entry revised Jun 28 2005

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