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

A054622

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

Terms

    a(0) =0a(1) =1a(2) =36a(3) =834a(4) =8230a(5) =48915a(6) =210126a(7) =720916a(8) =2097684a(9) =5381685a(10) =12501280a(11) =26796726a(12) =53750346a(13) =101969959a(14) =184478490a(15) =320367720a(16) =536879176a(17) =871980201a(18) =1377508284a(19) =2122961770a(20) =3200020110a(21) =4727881851a(22) =6859513606a(23) =9788908284a(24) =13759455900

External references