a(n) = floor(n*exp(csc(n))).

Terms

a(0) =3a(1) =6a(2) =3585a(3) =1a(4) =1a(5) =0a(6) =32a(7) =21a(8) =101a(9) =1a(10) =4a(11) =1a(12) =140a(13) =38a(14) =69a(15) =0a(16) =6a(17) =4a(18) =15011a(19) =59a(20) =69a(21) =0a(22) =7a(23) =7a(24) =0a(25) =96a(26) =76a(27) =1122a(28) =6a(29) =10