Number of irreducible coverings by edges of the complete bipartite graph K_{n,n}; main diagonal of A210654.
A210655
Number of irreducible coverings by edges of the complete bipartite graph K_{n,n}; main diagonal of A210654.
Terms
- a(0) =1a(1) =2a(2) =15a(3) =184a(4) =2945a(5) =63756a(6) =1748803a(7) =58746304a(8) =2361347073a(9) =111310111900
External references
- oeis: A210655