A nonsense sequence.

Terms

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