Number of bracelet structures using exactly five different colored beads.
A056360
Number of bracelet structures using exactly five different colored beads.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =3a(6) =16a(7) =85a(8) =434a(9) =2271a(10) =11530a(11) =58400a(12) =290689a(13) =1436685a(14) =7036418a(15) =34286464a(16) =166316979a(17) =804557406a(18) =3884248150a(19) =18731033958a(20) =90269841924a(21) =434955114981
External references
- oeis: A056360