Number of Costas arrays of order n, counting rotations and flips as distinct.

Terms

a(0) =1a(1) =2a(2) =4a(3) =12a(4) =40a(5) =116a(6) =200a(7) =444a(8) =760a(9) =2160a(10) =4368a(11) =7852a(12) =12828a(13) =17252a(14) =19612a(15) =21104a(16) =18276a(17) =15096a(18) =10240a(19) =6464a(20) =3536a(21) =2052a(22) =872a(23) =200a(24) =88a(25) =56a(26) =204a(27) =712a(28) =164