%N Numbers n that are primitive solutions to n^2 = a^2 + b^2 + c^2 (a,b,c > 0).
%C These are the odd numbers excluding 1 and 5. Every term in A005767 is n*2^k for some k.
%H T. D. Noe, <a href="/A005818/b005818.txt">Table of n, a(n) for n = 1..1000</a>
%F G.f.: x*(-2*x^2 + x + 3)/(x - 1)^2. - _Chai Wah Wu_, Sep 14 2018
%Y Cf. A005767.
%A _N. J. A. Sloane_, RALPH PETERSON (ralphp(AT)LIBRARY.NRL.NAVY.MIL)
%E Name corrected by _T. D. Noe_, Nov 12 2010