E.g.f. satisfies A(x) = exp(x*A(-x^2)).

Terms

a(0) =1a(1) =1a(2) =1a(3) =-5a(4) =-23a(5) =1a(6) =601a(7) =7771a(8) =26545a(9) =-401183a(10) =-6965999a(11) =-42828389a(12) =528611161a(13) =15543020065a(14) =141983039017