A045685 2n-bead balanced binary necklaces of fundamental period 2n, equivalent to reverse, inequivalent to complement and reversed complement.

0, 0, 0, 0, 2, 2, 14, 12, 56, 54, 230, 220, 870, 860, 3348, 3302, 12672, 12614, 48280, 48108, 183990, 183720, 704156, 703384, 2701128, 2700058, 10395580, 10392354, 40104974, 40100216, 155097460, 155084752, 601034752, 601014634, 2333527814