Number of n-bead necklaces labeled with numbers -5..5 not allowing reversal, with sum zero with no three beads in a row equal.
A208942
Number of n-bead necklaces labeled with numbers -5..5 not allowing reversal, with sum zero with no three beads in a row equal.
Terms
- a(0) =1a(1) =6a(2) =30a(3) =223a(4) =1722a(5) =14430a(6) =125322a(7) =1123612a(8) =10303798a(9) =96228900a(10) =911986784a(11) =8749074498a(12) =84797323618a(13) =829080237870
External references
- oeis: A208942