Number of configurations, excluding reflections and color swaps, of n beads each of three colors on a string.

A296143

Number of configurations, excluding reflections and color swaps, of n beads each of three colors on a string.

Terms

    a(0) =1a(1) =11a(2) =148a(3) =2955a(4) =63231a(5) =1430912a(6) =33259920a(7) =788827215a(8) =18989544145a(9) =462583897776

External references