A358302 - OEIS

%I #7 Dec 06 2022 19:33:37

%S 1,12,100,392,1554,3486,9690,18942,38610,65268,125116,186870,324646,

%T 472546,713354,1003888,1531908,2000638,2920970,3780950

%N Number of triangular regions in the Farey Diagram Farey(n,n), divided by 4.

%C This is the leading column in A358885, divided by 4.

%C It would be nice to have a formula.

%Y 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 nonn,more

%O 1,2

%A _Scott R. Shannon_ and _N. J. A. Sloane_, Dec 06 2022