%I #6 Mar 30 2012 18:57:42
%S 1,2,2,3,3,3,4,5,3,4,4,6,5,5,5,5,6,8,4,7,6,7,7,6,7,8,7,7,6,9,8,9,7,8,
%T 8,9,8,9,9,10,9,9,9,9,9,10,10,10,10,11,9,10,10,10,10,11,11,11,11,12,
%U 11,10,11,11,11,11,11,12,12,12,12,14,10,12,13,12,12,12,13,13,12
%N Triangular array: g(n,k)=number of fractional parts (i*sqrt(6)) in interval [(k-1)/n, k/n], for 1<=i<=n^2, 1<=k<=n.
%C See A194285.
%e First eight rows:
%e 1
%e 2..2
%e 3..3..3
%e 4..5..3..4
%e 4..6..5..5..5
%e 5..6..8..4..7..6
%e 7..7..6..7..8..7..7
%e 6..9..8..9..7..8..8..9
%t r = Sqrt[6];
%t f[n_, k_, i_] := If[(k - 1)/n <= FractionalPart[i*r] < k/n, 1, 0]
%t g[n_, k_] := Sum[f[n, k, i], {i, 1, n^2}]
%t TableForm[Table[g[n, k], {n, 1, 14}, {k, 1, n}]]
%t Flatten[%] (* A194315 *)
%Y Cf. A194315.
%K nonn,tabl
%O 1,2
%A _Clark Kimberling_, Aug 21 2011