Arises from color-symmetrized counting of tensor invariants.
A232220
Arises from color-symmetrized counting of tensor invariants.
Terms
- a(0) =1a(1) =4a(2) =15a(3) =83a(4) =385a(5) =2989a(6) =20559a(7) =203992a(8) =1827640a(9) =21864590
External references
- oeis: A232220