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 A358302 #7 Dec 06 2022 19:33:37 %S A358302 1,12,100,392,1554,3486,9690,18942,38610,65268,125116,186870,324646, %T A358302 472546,713354,1003888,1531908,2000638,2920970,3780950 %N A358302 Number of triangular regions in the Farey Diagram Farey(n,n), divided by 4. %C A358302 This is the leading column in A358885, divided by 4. %C A358302 It would be nice to have a formula. %Y A358302 The Farey Diagrams Farey(m,n) are studied in A358298-A358307 and A358882-A358885, the Completed Farey Diagrams of order (m,n) in A358886-A358889. %K A358302 nonn,more %O A358302 1,2 %A A358302 _Scott R. Shannon_ and _N. J. A. Sloane_, Dec 06 2022