Number of aperiodic necklaces with n labeled beads of 2 colors.
A032321
Number of aperiodic necklaces with n labeled beads of 2 colors.
Terms
- a(0) =2a(1) =2a(2) =12a(3) =72a(4) =720a(5) =6480a(6) =90720a(7) =1209600a(8) =20321280a(9) =359251200a(10) =7424524800a(11) =160465536000
External references
- oeis: A032321