1542684

Appears in sequences

• a(n) = floor( binomial(n,8)/9).at n=33A011845
• Number of necklaces with 9 black beads and n-9 white beads.at n=25A032194
• a(n) = ceiling(binomial(n,9)/n).at n=33A053733
• Smallest p for which there are exactly n primitive Pythagorean triangles with perimeter p; i.e., smallest p such that A070109(p) = n.at n=4A078928
• Number of aperiodic necklaces (Lyndon words) with 9 black beads and n white beads.at n=25A263318
• Number of vertices of type B at level n of the hyperbolic Pascal pyramid.at n=16A292291
• Number of subsets of 9 integers between 1 and n such that their sum is 3 modulo n.at n=24A381351