2026606domain: NAppears in sequencesE.g.f.: A(x) = exp( x/A(-x*A(x)^3) ).at n=7A213109Square 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 A213109.at n=43A384802