Log of g.f. for rooted trees.

Terms

a(0) =1a(1) =0a(2) =1a(3) =-1a(4) =3a(5) =-14a(6) =47a(7) =-227a(8) =1343a(9) =-7772a(10) =53145a(11) =-408102a(12) =3284325a(13) =-29130869a(14) =279951911a(15) =-2849836062a(16) =31093638892a(17) =-361102774004