52234

Appears in sequences

• Number of bracelets (turnover necklaces) of n beads of 2 colors, 11 of them black.at n=13A032282
• Numbers m such that 2*phi(m) = phi(m+1).at n=34A050472
• E.g.f.: -sin(x)*LambertW(-x).at n=7A277475