Number of n-bead necklaces labeled with numbers -4..4 not allowing reversal, with sum zero.
A208593
Number of n-bead necklaces labeled with numbers -4..4 not allowing reversal, with sum zero.
Terms
- a(0) =1a(1) =5a(2) =21a(3) =125a(4) =791a(5) =5457a(6) =39019a(7) =288317a(8) =2178929a(9) =16773395a(10) =131034839a(11) =1036252649a(12) =8279446917a(13) =66733111919a(14) =541954722471
External references
- oeis: A208593