Number of n-bead necklaces labeled with numbers -6..6 not allowing reversal, with sum zero.
A208595
Number of n-bead necklaces labeled with numbers -6..6 not allowing reversal, with sum zero.
Terms
- a(0) =1a(1) =7a(2) =43a(3) =371a(4) =3431a(5) =34153a(6) =353333a(7) =3770475a(8) =41165305a(9) =457714497a(10) =5164908167a(11) =58997692301a(12) =680874861687
External references
- oeis: A208595