Counting sequence for classification of nonattacking queens on n X n toroidal board.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =1a(5) =2a(6) =3a(7) =5a(8) =1a(9) =3a(10) =23a(11) =30a(12) =40a(13) =4a(14) =132a(15) =218a(16) =5a(17) =1859a(18) =29517a(19) =1a(20) =2a(21) =9a(22) =18a(23) =51a(24) =470a(25) =7170a(26) =387830a(27) =1a(28) =6a(29) =1215