Necklaces with n beads of 6 colors, no 2 adjacent beads the same color.

A106368

Necklaces with n beads of 6 colors, no 2 adjacent beads the same color.

Terms

    a(0) =6a(1) =15a(2) =40a(3) =165a(4) =624a(5) =2635a(6) =11160a(7) =48915a(8) =217040a(9) =976887a(10) =4438920a(11) =20346485a(12) =93900240a(13) =435970995a(14) =2034505656a(15) =9536767665a(16) =44878791360a(17) =211927736135

External references