E.g.f. satisfies A(x) = exp(x*A(x^9/9!)).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =1a(10) =11a(11) =111a(12) =661a(13) =2861a(14) =10011a(15) =30031a(16) =80081a(17) =194481a(18) =437581a(19) =1385671a(20) =20323161a(21) =294517861a(22) =2851708861a(23) =20461620411a(24) =117812647921a(25) =572637720601