Search: id:A000413
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%I A000413 M4367 N1833
%S A000413 1,7,19,57,81,251,437,691,739,1743,3695,6619,8217,9771,14771,15155,
%T A000413 16831,18805,26745,30551,41755,46297,54339,72359,86407,96969,131059,
%U A000413 344859,395231,519963,607141,677397,741509,893019,917217,1288415,1406811
%N A000413 Let A(n) = #{(i,j,k): i^2 + j^2 + k^2 <= n}, V(n) = (4/3)Pi*n^(3/2), 
               P(n) = A(n) - V(n); A000092 gives values of n where |P(n)| sets a 
               new record; sequence gives A(A00092(n)).
%D A000413 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A000413 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A000413 W. C. Mitchell, The number of lattice points in a k-dimensional hypersphere, 
               Math. Comp., 20 (1966), 300-310.
%Y A000413 Cf. A000323, A000036, A000092, A000099, A000223.
%Y A000413 Sequence in context: A002714 A126361 A069005 this_sequence A155335 A155226 
               A165683
%Y A000413 Adjacent sequences: A000410 A000411 A000412 this_sequence A000414 A000415 
               A000416
%K A000413 nonn
%O A000413 0,2
%A A000413 N. J. A. Sloane (njas(AT)research.att.com).
%E A000413 Revised Jun 28 2005

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