Number of symmetrically inequivalent coincidence rotations of index 2n-1 in lattice D_4.

Terms

a(0) =1a(1) =16a(2) =36a(3) =64a(4) =168a(5) =144a(6) =196a(7) =576a(8) =324a(9) =400a(10) =1024a(11) =576a(12) =960a(13) =1584a(14) =900a(15) =1024a(16) =2304a(17) =2304a(18) =1444a(19) =3136a(20) =1764a(21) =1936a(22) =6048a(23) =2304a(24) =3248a(25) =5184a(26) =2916a(27) =5184a(28) =6400a(29) =3600