Number of different bracelets with 6 beads of at most n colors, allowing turning over.

Terms

a(0) =0a(1) =1a(2) =13a(3) =92a(4) =430a(5) =1505a(6) =4291a(7) =10528a(8) =23052a(9) =46185a(10) =86185a(11) =151756a(12) =254618a(13) =410137a(14) =638015a(15) =963040a(16) =1415896a(17) =2034033a(18) =2862597a(19) =3955420a(20) =5376070a(21) =7198961a(22) =9510523a(23) =12410432a(24) =16012900a(25) =20448025a(26) =25863201