Molien series of 4 X 4 upper triangular matrices over GF( 3 ).

Terms

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