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 A194307 #8 Apr 10 2021 08:04:30 %S A194307 1,3,1,4,2,3,3,5,4,4,4,5,7,3,6,6,5,5,5,8,7,7,7,7,7,7,7,7,8,7,7,7,8,9, %T A194307 9,9,8,9,8,11,10,8,7,9,11,10,10,10,11,9,9,12,9,9,11,10,12,10,12,11,10, %U A194307 11,12,10,11,12,9,14,11,13,14,10,13,10,13,12,11,14,8,17,11,14 %N A194307 Triangular array: g(n,k) = number of fractional parts (i*Pi) in interval [(k-1)/n, k/n], for 1 <= i <= n^2, 1 <= k <= n. %C A194307 See A194285. %e A194307 First eight rows: %e A194307 1; %e A194307 3, 1; %e A194307 4, 2, 3; %e A194307 3, 5, 4, 4; %e A194307 4, 5, 7, 3, 6; %e A194307 6, 5, 5, 5, 8, 7; %e A194307 7, 7, 7, 7, 7, 7, 7; %e A194307 8, 7, 7, 7, 8, 9, 9, 9; %t A194307 r = Pi; %t A194307 f[n_, k_, i_] := If[(k - 1)/n <= FractionalPart[i*r] < k/n, 1, 0] %t A194307 g[n_, k_] := Sum[f[n, k, i], {i, 1, n^2}] %t A194307 TableForm[Table[g[n, k], {n, 1, 14}, {k, 1, n}]] %t A194307 Flatten[%] (* A194307 *) %Y A194307 Cf. A194285. %K A194307 nonn,tabl %O A194307 1,2 %A A194307 _Clark Kimberling_, Aug 21 2011