G.f.: 1/(1 + x + 5*x^2 - x^3 + x^4).

Terms

a(0) =1a(1) =-1a(2) =-4a(3) =10a(4) =8a(5) =-61a(6) =35a(7) =268a(8) =-512a(9) =-732a(10) =3525a(11) =-645a(12) =-17200a(13) =24682a(14) =57148a(15) =-197113a(16) =-46745a(17) =1064776a(18) =-1085312a(19) =-4088200a(20) =10626281a(21) =7664631a(22) =-63798924a(23) =40190250a(24) =275842720a(25) =-548257525a(26) =-726966901a(27) =3703906996a(28) =-893172736a(29) =-17805071620