Number of n-bead necklaces labeled with numbers -3..3 not allowing reversal, with sum zero.
A208592
Number of n-bead necklaces labeled with numbers -3..3 not allowing reversal, with sum zero.
Terms
- a(0) =1a(1) =4a(2) =13a(3) =60a(4) =291a(5) =1564a(6) =8671a(7) =49852a(8) =292927a(9) =1753964a(10) =10656757a(11) =65549844a(12) =407347747a(13) =2553684852a(14) =16130539053a(15) =102563204892a(16) =655918173287
External references
- oeis: A208592