650325

Appears in sequences

• Number of nonequivalent dissections of a polygon into n quadrilaterals by nonintersecting diagonals rooted at a cell up to rotation.at n=9A005033
• a(n) = floor( binomial(n,8)/9).at n=30A011845
• Number of necklaces with 9 black beads and n-9 white beads.at n=22A032194
• a(n) = ceiling(binomial(n,9)/n).at n=30A053733
• Number of aperiodic necklaces (Lyndon words) with 9 black beads and n white beads.at n=22A263318
• Number of subsets of 9 integers between 1 and n such that their sum is 3 modulo n.at n=21A381351