33827974domain: NAppears in sequencesExpansion of e.g.f. exp(2*(exp(x) - 1)).at n=11A001861Square array T(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of e.g.f. exp(2 * (exp(x) - Sum_{j=0..k} x^j/j!)).at n=77A336345