Triangle read by rows: T(n, k) is the number of primitive (period n) n-bead necklace structures with k different colors. Only includes structures that contain all k colors.
A107424
Triangle read by rows: T(n, k) is the number of primitive (period n) n-bead necklace structures with k different colors. Only includes structures that contain all k colors.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =0a(7) =2a(8) =2a(9) =1a(10) =0a(11) =3a(12) =5a(13) =2a(14) =1a(15) =0a(16) =5a(17) =17a(18) =13a(19) =3a(20) =1a(21) =0a(22) =9a(23) =43a(24) =50a(25) =20a(26) =3a(27) =1a(28) =0a(29) =16
External references
- oeis: A107424