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 A237708 #11 Jan 19 2022 22:39:30 %S A237708 0,1,1,4,4,7,6,7,7,10,10,16,13,16,16,19,16,22,22,28,25,28,27,28,28,34, %T A237708 28,34,34,37,34,43,40,46,43,46,46,52,46,52,49,52,49,52,52,61,55,67,63 %N A237708 Number of unit cubes, aligned with a three-dimensional Cartesian mesh, partially encircled along the edge of the first octant of a sphere centered at the origin, ordered by increasing radius. %e A237708 At radius 0, there are no partially filled cubes. At radius >0 but < sqrt(1), there is 1 partially filled square along the edge of the sphere. At radius = sqrt(1), there is 1 partially filled cube along the edge of the sphere. At radius > 1 but < sqrt(2), there are 4 partially filled cubes. %Y A237708 Cf. A000378 (corresponds to the square radius of alternate entries). %Y A237708 Cf. A234300 (2-dimensional analog). %K A237708 nonn %O A237708 0,4 %A A237708 _Rajan Murthy_, Feb 11 2014