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Numbers that are both primitively and imprimitively represented by x^2+y^2+z^2.
5

%I #7 Mar 30 2012 17:28:57

%S 9,18,25,27,45,49,50,54,75,81,90,98,99,117,121,125,126,147,150,153,

%T 162,169,171,189,198,225,234,242,243,245,250,261,270,275,289,294,297,

%U 306,315,325,333,338,342,350,361,363,369,378,387,405,414,425

%N Numbers that are both primitively and imprimitively represented by x^2+y^2+z^2.

%F Union of A034046 and A034047 is A000378. Intersection of A047449 and A034043 is A034046. Numbers that are in A000378 and neither squarefree nor congruent to 0 mod 4. - _Ray Chandler_, Sep 05 2004

%Y Cf. A000378, A004215, A047449, A034043-A034047.

%K nonn

%O 1,1

%A _N. J. A. Sloane_.