G.f. satisfies A(x) = 1 + x*A(x) / (1 + x)^4.

Terms

a(0) =1a(1) =1a(2) =-3a(3) =3a(4) =5a(5) =-22a(6) =27a(7) =28a(8) =-163a(9) =235a(10) =134a(11) =-1188a(12) =1983a(13) =408a(14) =-8504a(15) =16320a(16) =-1551a(17) =-59659a(18) =131507a(19) =-46683a(20) =-408806a(21) =1040147a(22) =-612380a(23) =-2721835a(24) =8088003a(25) =-6523626a(26) =-17457420a(27) =61883839a(28) =-62900496a(29) =-106248240