Number of n-bead necklaces of 7 colors not allowing reversal, with no adjacent beads having the same color.
A208534
Number of n-bead necklaces of 7 colors not allowing reversal, with no adjacent beads having the same color.
Terms
- a(0) =7a(1) =21a(2) =70a(3) =336a(4) =1554a(5) =7826a(6) =39990a(7) =210126a(8) =1119790a(9) =6047412a(10) =32981550a(11) =181402676a(12) =1004668770a(13) =5597460306a(14) =31345666730a(15) =176319474366a(16) =995685849690
External references
- oeis: A208534