Number T(n,k) of primitive (= aperiodic) n-bead necklaces with colored beads of exactly k different colors; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.
A254040
Number T(n,k) of primitive (= aperiodic) n-bead necklaces with colored beads of exactly k different colors; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =0a(5) =1a(6) =0a(7) =0a(8) =2a(9) =2a(10) =0a(11) =0a(12) =3a(13) =9a(14) =6a(15) =0a(16) =0a(17) =6a(18) =30a(19) =48a(20) =24a(21) =0a(22) =0a(23) =9a(24) =89a(25) =260a(26) =300a(27) =120a(28) =0a(29) =0
External references
- oeis: A254040