Molien series for 3-dimensional group [2+,n ] = 2*(n/2).

Terms

a(0) =1a(1) =0a(2) =2a(3) =0a(4) =3a(5) =1a(6) =4a(7) =2a(8) =6a(9) =3a(10) =8a(11) =4a(12) =10a(13) =6a(14) =12a(15) =8a(16) =15a(17) =10a(18) =18a(19) =12a(20) =21a(21) =15a(22) =24a(23) =18a(24) =28a(25) =21a(26) =32a(27) =24a(28) =36a(29) =28