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 A107766 #17 Dec 29 2023 15:25:17
%S A107766 1,0,1,4,46,2284,1405428,229798671816,423295097006496421879
%N A107766 Number of self-dual monotonic Boolean functions on n variables (where the result depends on all n variables).
%H A107766 Hans-J. Bandelt and Jarmila Hedlíková, <a href="http://dx.doi.org/10.1016/0012-365X(83)90173-5">Median algebras</a>, Discrete Mathematics, 45 (1983), 1-30.
%F A107766 A001206(n) = Sum_{k=1..n} binomial(n,k)*a(k).
%Y A107766 Cf. A001206, A107765.
%K A107766 hard,nonn,more
%O A107766 1,4
%A A107766 _Don Knuth_, Jun 11 2005
%E A107766 a(7)-a(8) from _Vladeta Jovovic_, Jun 13 2005
%E A107766 a(9) (using formula) from _Pontus von Brömssen_, Dec 29 2023