9272778
domain: N
Appears in sequences
- Number of n-bead necklaces with beads of 2 colors and primitive period n, when turning over is allowed.at n=29A001371
- Number of bracelets of length n using exactly two different colored beads.at n=28A056342
- Number of primitive (period n) bracelets using exactly two different colored beads.at n=28A056348