Arises from color-symmetrized counting of tensor invariants.

A232217

Arises from color-symmetrized counting of tensor invariants.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =17a(4) =59a(5) =265a(6) =1095a(7) =6342a(8) =33966a(9) =219968a(10) =1333654a(11) =9930505a(12) =70419371

External references