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 A242130 #10 May 10 2014 23:43:08 %S A242130 3,12,14,18,27,29,33,35,41,48,50,54,56,62,66,72,74,75,77,81,83,89,93, %T A242130 99,101,107,108,110,114,116,122,126,132,134,140,146,147,149,153,155, %U A242130 161,165,171,173,179,185,189,192,194,198,200 %N A242130 Sum of squares of three numbers x, y, z such that 3*floor(sum of squares/3) = x+y+z. %C A242130 Three times the quadratic average of x,y,z in most cases is greater than their sum. %e A242130 a(7)=33 for 33=1^2+4^2+4^2; floor(sqrt(33/3))=3; 3*3=9=1+4+4. %Y A242130 Cf. A000408. %K A242130 nonn %O A242130 1,1 %A A242130 _Carmine Suriano_, May 05 2014