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 A194330 #5 Mar 30 2012 18:57:43
%S A194330 2,2,2,2,3,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,3,2,2,2,2,2,2,2,3,2,2,1,
%T A194330 2,2,2,2,2,2,3,1,2,3,1,3,1,3,2,2,2,2,1,3,1,2,2,2,3,1,2,3,1,2,3,1,2,3,
%U A194330 1,2,3,2,2,2,1,3,2,1,2,2,2,2,2,2,2,2,2,2,2,2,2,1,2,2,3,2,2,2,3
%N A194330 Triangular array: g(n,k)=number of fractional parts (i*r) in interval [(k-1)/n, k/n], for 1<=i<=2n, 1<=k<=n, r=2-sqrt(3).
%C A194330 See A194285.
%e A194330 First nine rows:
%e A194330 2
%e A194330 2..2
%e A194330 2..3..1
%e A194330 2..2..2..2
%e A194330 2..2..2..2..2
%e A194330 2..2..2..2..2..2
%e A194330 1..3..2..2..2..2..2
%e A194330 2..2..3..2..2..1..2..2
%e A194330 2..2..2..2..3..1..2..3..1
%t A194330 r = 2-Sqrt[3];
%t A194330 f[n_, k_, i_] := If[(k - 1)/n <= FractionalPart[i*r] < k/n, 1, 0]
%t A194330 g[n_, k_] := Sum[f[n, k, i], {i, 1, 2n}]
%t A194330 TableForm[Table[g[n, k], {n, 1, 14}, {k, 1, n}]]
%t A194330 Flatten[%] (* A194330 *)
%Y A194330 Cf. A194285.
%K A194330 nonn,tabl
%O A194330 1,1
%A A194330 _Clark Kimberling_, Aug 22 2011