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 A194343 #5 Mar 30 2012 18:57:43 %S A194343 1,2,2,3,3,3,3,4,5,4,5,5,5,5,5,6,7,5,7,5,6,7,7,7,7,7,7,7,8,8,8,8,8,8, %T A194343 8,8,8,9,10,9,9,9,9,10,8,10,11,10,10,9,10,11,9,10,10,11,11,12,10,12, %U A194343 10,12,10,11,11,11,12,12,12,13,12,12,13,12,11,12,12,11,14,12,14 %N A194343 Triangular array: g(n,k)=number of fractional parts (i*r) in interval [(k-1)/n, k/n], for 1<=i<=n^2, 1<=k<=n, r=3-e. %C A194343 See A194285. %e A194343 First eight rows: %e A194343 1 %e A194343 2..2 %e A194343 3..3..3 %e A194343 3..4..5..4 %e A194343 5..5..5..5..5 %e A194343 6..7..5..7..5..6 %e A194343 7..7..7..7..7..7..7 %e A194343 8..8..8..8..8..8..8..8 %t A194343 r = 3-E; %t A194343 f[n_, k_, i_] := If[(k - 1)/n <= FractionalPart[i*r] < k/n, 1, 0] %t A194343 g[n_, k_] := Sum[f[n, k, i], {i, 1, n^2}] %t A194343 TableForm[Table[g[n, k], {n, 1, 14}, {k, 1, n}]] %t A194343 Flatten[%] (* A194343 *) %Y A194343 Cf. A194343. %K A194343 nonn,tabl %O A194343 1,2 %A A194343 _Clark Kimberling_, Aug 22 2011