Coefficients in expansion of (x-1)*(1+x)^(n-1), n > 0.

Terms

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