Exponential reversion of A288606.

Terms

a(0) =0a(1) =1a(2) =-2a(3) =6a(4) =-26a(5) =180a(6) =-1734a(7) =23464a(8) =-385160a(9) =7561308a(10) =-166580820a(11) =4109707800a(12) =-110972371608