The number of Hamiltonian cycles with rotational symmetry of order 3 on the triangular grid, n vertices on each side.
A379747
The number of Hamiltonian cycles with rotational symmetry of order 3 on the triangular grid, n vertices on each side.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =0a(4) =2a(5) =6a(6) =0a(7) =52a(8) =270a(9) =0a(10) =17130a(11) =189154a(12) =0a(13) =51417622
External references
- oeis: A379747