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 A244250 #22 Jan 06 2017 08:32:00 %S A244250 1,1,1,1,1,0,1,1,1,1,1,1,1,0,0,1,1,1,1,1,2,1,1,1,1,0,0,0,1,1,1,1,1,1, %T A244250 1,1,1,1,1,1,1,0,0,1,1,1,1,1,1,1,1,1,1,1,0,1,1,1,1,1,1,0,0,0,0,0,1,1, %U A244250 1,1,1,1,1,1,1,2,2,2,1,1,1,1,1,1,1,0,0,0,0,0,0 %N A244250 Triangle read by rows in which row n lists the widths in the first octant of the symmetric representation of sigma(n). %C A244250 For the definition of k-th width of the symmetric representation of sigma(n) see A249351. %C A244250 Row n list the first n terms of the n-th row of A249351. %C A244250 It appears that the leading diagonal is also A067742 (which was conjectured by _Michel Marcus_ in the entry A237593 and checked with two Mathematica functions up to n = 100000 by _Hartmut F. W. Hoft_). %C A244250 For more information see A237591, A237593. %e A244250 Triangle begins: %e A244250 1; %e A244250 1, 1; %e A244250 1, 1, 0; %e A244250 1, 1, 1, 1; %e A244250 1, 1, 1, 0, 0; %e A244250 1, 1, 1, 1, 1, 2; %e A244250 1, 1, 1, 1, 0, 0, 0; %e A244250 1, 1, 1, 1, 1, 1, 1, 1; %e A244250 1, 1, 1, 1, 1, 0, 0, 1, 1; %e A244250 1, 1, 1, 1, 1, 1, 1, 1, 1, 0; %e A244250 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0; %e A244250 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2; %e A244250 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0; %e A244250 ... %Y A244250 Cf. A000203, A067742, A071562, A196020, A235791, A236104, A237270, A237271, A237591, A237593, A238443, A239660, A239932-A239934, A240542, A241008, A241010, A244360, A244361, A245685, A246955, A246956, A247687, A249223, A249351, A250068, A250070, A250071. %K A244250 nonn,tabl %O A244250 1,21 %A A244250 _Omar E. Pol_, Oct 26 2014