Coefficient of x^(-n) in expansion of continued fraction 0, x, x^2, x^3, x^4, ... .

Terms

a(0) =0a(1) =1a(2) =0a(3) =0a(4) =-1a(5) =0a(6) =0a(7) =1a(8) =0a(9) =1a(10) =-1a(11) =0a(12) =-2a(13) =1a(14) =-1a(15) =3a(16) =-2a(17) =3a(18) =-4a(19) =4a(20) =-6a(21) =7a(22) =-8a(23) =11a(24) =-13a(25) =16a(26) =-20a(27) =24a(28) =-31a(29) =37