G.f. A(x) satisfies: A(x) = x - x^2 * exp(A(x) - A(x^2)/2 + A(x^3)/3 - A(x^4)/4 + ...).

Terms

a(0) =1a(1) =-1a(2) =-1a(3) =1a(4) =2a(5) =-1a(6) =-5a(7) =-1a(8) =11a(9) =10a(10) =-21a(11) =-39a(12) =30a(13) =126a(14) =4a(15) =-354a(16) =-261a(17) =834a(18) =1347a(19) =-1483a(20) =-5033a(21) =823a(22) =15663a(23) =8765a(24) =-41112a(25) =-56364a(26) =84888a(27) =234546a(28) =-91319a(29) =-791833