Number of n-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero.
A208590
Number of n-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero.
Terms
- a(0) =1a(1) =3a(2) =13a(3) =125a(4) =1761a(5) =34153a(6) =833253a(7) =24627705a(8) =855798877a(9) =34223775091
External references
- oeis: A208590