Nearest integer to sin(n).

Terms

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