Number of necklaces with n labeled beads of 2 colors.
A066318
Number of necklaces with n labeled beads of 2 colors.
Terms
- a(0) =2a(1) =4a(2) =16a(3) =96a(4) =768a(5) =7680a(6) =92160a(7) =1290240a(8) =20643840a(9) =371589120a(10) =7431782400a(11) =163499212800
External references
- oeis: A066318