a(n) = floor(tan(n)^3).

Terms

a(0) =0a(1) =3a(2) =-11a(3) =-1a(4) =1a(5) =-39a(6) =-1a(7) =0a(8) =-315a(9) =-1a(10) =0a(11) =-11535646a(12) =-1a(13) =0a(14) =380a(15) =-1a(16) =0a(17) =42a(18) =-2a(19) =0a(20) =11a(21) =-4a(22) =0a(23) =4a(24) =-10a(25) =-1a(26) =1a(27) =-36a(28) =-1a(29) =0