224672domain: NAppears in sequencesA014486-encodings of trivalent plane trees (tpt) represented as (embedded into) a subset of general plane trees.at n=9A083936Expansion of e.g.f. exp(2*x*G(x)^3) where G(x) = 1 + x*G(x)^4 is the g.f. of A002293.at n=5A380605