93865986880domain: NAppears in sequencesE.g.f. A(x) satisfies A(x) = exp( x*A(x) * A(2*x*A(x)) ).at n=7A384787Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of e.g.f. B(x)^k, where B(x) is the e.g.f. of A384787.at n=43A384788