a(n) = ceiling(Sum_{k=0..n} tan(k)).

Terms

a(0) =0a(1) =2a(2) =0a(3) =0a(4) =1a(5) =-2a(6) =-3a(7) =-2a(8) =-9a(9) =-9a(10) =-9a(11) =-234a(12) =-235a(13) =-235a(14) =-227a(15) =-228a(16) =-228a(17) =-224a(18) =-226a(19) =-225a(20) =-223a(21) =-225a(22) =-225a(23) =-223a(24) =-225a(25) =-225a(26) =-224a(27) =-227a(28) =-228a(29) =-227