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%I #2 Mar 30 2012 17:40:19
%S 1,9,81,137,321,609,1081,1561,2137,3193,4393,4889,6617,8425,9529,
%T 11905,14169,17097,18953,21953,25105,29177,32681,35937,41105,46321,
%U 50529,55217,62177,67665,74849,80817,87185,96449,104945,112609,120881,130137
%N a(n) = A175369(n^2).
%C Number of integer 4-tuples (x,y,z,u) satisfying |x|^3+|y|^3+|z|^3+|u|^3 <= n^2, -n <= x,y,z <= n. If the cubes were replaced by squares, A055410 would result.
%K nonn
%O 0,2
%A _R. J. Mathar_, Apr 24 2010
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