This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A034046 #9 Jul 08 2025 20:05:06 %S A034046 9,18,25,27,45,49,50,54,75,81,90,98,99,117,121,125,126,147,150,153, %T A034046 162,169,171,189,198,225,234,242,243,245,250,261,270,275,289,294,297, %U A034046 306,315,325,333,338,342,350,361,363,369,378,387,405,414,425 %N A034046 Numbers that are both primitively and imprimitively represented by x^2+y^2+z^2. %F A034046 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 A034046 Cf. A000378, A004215, A047449, A034043-A034047. %K A034046 nonn %O A034046 1,1 %A A034046 _N. J. A. Sloane_