1246862

Appears in sequences

• Number of bracelet structures using exactly two different colored beads.at n=26A056357
• a(n) is the number of representative two-color bracelets (necklaces with turnover allowed) with n beads for n >= 2.at n=25A213942
• Number of necklaces with n beads colored white or red, where the number of white beads is odd and at least three and turning over is allowed.at n=24A263768