900214domain: NAppears in sequencesA simple grammar: power set of pairs of sequences.at n=35A052812E.g.f. A(x) satisfies: A(x) = exp( Integral B(x) dx ) such that B(x) = exp(1+x - exp(x)) * exp( Integral A(x) dx ), where the constant of integration is zero.at n=10A268170