Ceiling(n*exp(tan n)).

Terms

a(0) =5a(1) =1a(2) =3a(3) =13a(4) =1a(5) =5a(6) =17a(7) =1a(8) =6a(9) =20a(10) =1a(11) =7a(12) =21a(13) =19608a(14) =7a(15) =22a(16) =560a(17) =6a(18) =23a(19) =188a(20) =5a(21) =23a(22) =113a(23) =3a(24) =22a(25) =85a(26) =2a(27) =22a(28) =71a(29) =1