%I #2 Mar 30 2012 17:40:19
%S 1,5,9,9,13,21,25,25,25,29,45,45,45,49,49,49,53,69,69,77,77,77,77,81,
%T 81,85,101,109,109,109,117,117,117,117,117,117,125,141,149,149,157,
%U 157,157,157,165,165,165,165,165,169,193,197,205,205,205,205,213,213,213,213
%N a(n) = A175373(n^2).
%C Number of integer pairs (x,y) satisfying x^4+y^4 <= n^2, any -n <= x,y <=n.
%Y Cf. A175364.
%K nonn
%O 0,2
%A _R. J. Mathar_, Apr 24 2010