3-quantum transitions in systems of N>=3 spin 1/2 particles, in columns by combination indices.

Terms

a(0) =1a(1) =8a(2) =40a(3) =5a(4) =160a(5) =60a(6) =560a(7) =420a(8) =21a(9) =1792a(10) =2240a(11) =336a(12) =5376a(13) =10080a(14) =3024a(15) =84a(16) =15360a(17) =40320a(18) =20160a(19) =1680a(20) =42240a(21) =147840a(22) =110880a(23) =18480a(24) =330a(25) =112640a(26) =506880a(27) =532224a(28) =147840a(29) =7920