1342170

Appears in sequences

• Number of black and white n-bead necklaces with at least 3 white beads (turning over is not allowed); also number of clockwise arrangements of reflex and non-reflex angles that can form an n-gon.at n=25A262232
• Number of relatively prime Lyndon compositions (aperiodic necklaces of positive integers) with sum n.at n=24A318731
• Table read by antidiagonals where A(n,k) is the number of n X k aperiodic binary toroidal necklaces.at n=40A323861
• Number of n X n aperiodic binary toroidal necklaces.at n=5A323872