Arises from color-symmetrized counting of tensor invariants.

A232213

Arises from color-symmetrized counting of tensor invariants.

Terms

    a(0) =1a(1) =3a(2) =10a(3) =69a(4) =811a(5) =23372a(6) =1073376a(7) =67963017a(8) =5492554668a(9) =548974274040

External references