T(n,k) is the number of n-bead necklaces labeled with numbers -k..k not allowing reversal, with sum zero and first differences in -k..k.

A208993

T(n,k) is the number of n-bead necklaces labeled with numbers -k..k not allowing reversal, with sum zero and first differences in -k..k.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =2a(8) =3a(9) =2a(10) =1a(11) =3a(12) =5a(13) =7a(14) =3a(15) =1a(16) =3a(17) =7a(18) =16a(19) =17a(20) =5a(21) =1a(22) =4a(23) =11a(24) =33a(25) =59a(26) =51a(27) =9a(28) =1a(29) =4

External references