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 A365985 #15 Sep 27 2023 13:46:25 %S A365985 1,0,2,0,3,10,0,85,114,134,0,13317,10029,6972,4606,0,8300125,4026580, %T A365985 1756610,866300,389882,0,19743155103,6020248905,1736497215,589363590, %U A365985 231745290,78631330 %N A365985 Triangular array read by rows: T(n,k) is the number of binary relations on [n] that are dense (A355730) and have exactly k strongly connected components, n>=0, 0<=k<=n. %H A365985 Wikipedia, <a href="https://en.wikipedia.org/wiki/Dense_order">Dense order</a>. %e A365985 Triangle begins ... %e A365985 1; %e A365985 0, 2; %e A365985 0, 3, 10; %e A365985 0, 85, 114, 134; %e A365985 0, 13317, 10029, 6972, 4606; %e A365985 ... %Y A365985 Cf. A355730 (row sums). %K A365985 nonn,tabl,more %O A365985 0,3 %A A365985 _Geoffrey Critzer_, Sep 24 2023 %E A365985 Row n = 5 from _Pontus von Brömssen_, Sep 24 2023 %E A365985 Row n = 6 from _Pontus von Brömssen_, Sep 25 2023