%I A000592 M2324 N0919
%S A000592 1,3,4,6,8,9,11,13,15,17,19,20,22,26,28,30,31,33,35,37,39,41,43,45,48,
%T A000592 50,52,54,56,58,62,64,65,67,69,71,73,75,79,81,83,85,86,90,92,94,96,98,
%U A000592 100,102,104,106,108,112,113,117,119,121,123,127,129,131,133,135,137
%N A000592 Number of nonnegative solutions of x^2 + y^2 = z in first n shells.
%C A000592 N_2(t)= sum_{j <= t}n_2(j) where n_2(j) is the number of nonnegative 
               solutions (x,y) of x^ 2+y^ 2=j, the solution (x,y) being considered 
               as different from (y,x) in case x != y.
%D A000592 Gupta, Hansraj; A table of values of N_2(t). Res. Bull. East Panjab Univ. 
               1952, (1952). no. 20, 13-93.
%D A000592 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A000592 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%H A000592 T. D. Noe, <a href="b000592.txt">Table of n, a(n) for n=0..2749</a>
%F A000592 Cumulative totals of nonzero values in (or distinct values in cumulative 
               totals of) A000925. - Frank Adams-Watters (FrankTAW(AT)Netscape.net), 
               Jun 21 2006
%Y A000592 Cf. A000925.
%Y A000592 Sequence in context: A081031 A133280 A138097 this_sequence A138924 A024324 
               A036446
%Y A000592 Adjacent sequences: A000589 A000590 A000591 this_sequence A000593 A000594 
               A000595
%K A000592 nonn,nice,easy
%O A000592 0,2
%A A000592 N. J. A. Sloane (njas(AT)research.att.com).
%E A000592 More terms from Frank Adams-Watters (FrankTAW(AT)Netscape.net), Jun 21 
               2006