T(n,k) is the number of n-bead necklaces labeled with numbers -k..k allowing reversal, with sum zero.
A208825
T(n,k) is the number of n-bead necklaces labeled with numbers -k..k allowing reversal, with sum zero.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =3a(5) =2a(6) =1a(7) =4a(8) =5a(9) =5a(10) =1a(11) =5a(12) =8a(13) =16a(14) =7a(15) =1a(16) =6a(17) =13a(18) =38a(19) =45a(20) =18a(21) =1a(22) =7a(23) =18a(24) =75a(25) =155a(26) =167a(27) =32a(28) =1a(29) =8
External references
- oeis: A208825