Number of bracelets with n labeled beads of 3 colors.
A032261
Number of bracelets with n labeled beads of 3 colors.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =27a(4) =243a(5) =2916a(6) =43740a(7) =787320a(8) =16533720a(9) =396809280a(10) =10713850560a(11) =321415516800
External references
- oeis: A032261