9272780

Appears in sequences

• Number of necklaces with n beads of 2 colors, allowing turning over (these are also called bracelets).at n=29A000029
• a(n) is the n-th term in sequence A_n, respecting the offset, or a(n) = -1 if A_n has fewer than n terms.at n=28A051070
• Number of distinct necklaces with p beads of two possible colors, allowing turning over, p being a prime greater than 2.at n=8A104137