229448domain: NAppears in sequencesTriangle read by rows: T(p,q) is the number of B-diagrams G such that omega(G)=p half edges and h_f(G)=q non-used outer non-cut half edges.at n=24A265199E.g.f. A(x) satisfies: e = Sum_{n>=0} (1/n!) * (1+x)^(n^2) / A(x)^n.at n=6A303289