Number of n-bead necklaces labeled with numbers -5..5 allowing reversal, with sum zero and first and second differences in -5..5.
A208967
Number of n-bead necklaces labeled with numbers -5..5 allowing reversal, with sum zero and first and second differences in -5..5.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =11a(4) =40a(5) =221a(6) =1185a(7) =6883a(8) =39143a(9) =224991a(10) =1299553a(11) =7598452a(12) =44893012a(13) =267934513
External references
- oeis: A208967