Number of real polynomial invariants for the action of 4 copies of U(2) on the fourth tensor power of C^2.

A129550

Number of real polynomial invariants for the action of 4 copies of U(2) on the fourth tensor power of C^2.

Terms

    a(0) =1a(1) =1a(2) =8a(3) =20a(4) =98a(5) =293a(6) =1128a(7) =3409a(8) =10846a(9) =30480a(10) =84652a(11) =217677a(12) =544312a(13) =1289225a(14) =2961626a(15) =6528284a(16) =13980717a(17) =28963980a(18) =58464510a(19) =114806429a(20) =220298632a(21) =412950779a(22) =758418342a(23) =1365044296a(24) =2412766496a(25) =4189995629a(26) =7159916414

External references