Number of n-bead necklaces labeled with numbers -5..5 not allowing reversal, with sum zero and first differences in -5..5.
A208990
Number of n-bead necklaces labeled with numbers -5..5 not allowing reversal, with sum zero and first differences in -5..5.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =58a(4) =351a(5) =2354a(6) =16307a(7) =116183a(8) =843779a(9) =6227718a(10) =46571177a(11) =352155364a(12) =2688196663a(13) =20688930990a(14) =160363122189
External references
- oeis: A208990