Number of ways to color the vertices of an octagon using <= n colors, allowing rotations and reflections.

A060560

Number of ways to color the vertices of an octagon using <= n colors, allowing rotations and reflections.

Terms

    a(0) =0a(1) =1a(2) =30a(3) =498a(4) =4435a(5) =25395a(6) =107331a(7) =365260a(8) =1058058a(9) =2707245a(10) =6278140a(11) =13442286a(12) =26942565a(13) =51084943a(14) =92383305a(15) =160386360a(16) =268718116a(17) =436365945a(18) =689252778a(19) =1062132490a(20) =1600850055a(21) =2365010571a(22) =3431103775a(23) =4896133188a(24) =6881801550a(25) =9539306725a(26) =13054804776a(27) =17655599430

External references