17896832
domain: N
Appears in sequences
- Definition (1): Number of n-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed.at n=30A000013
- Number of even sequences with period 2n (bisection of A000013).at n=15A000116
- Number of complementary pairs of circulant digraphs on n nodes.at n=30A054930
- Number of cycles for the map LL:x->x^2-2 acting on Z/(2^n-1).at n=31A128976