82168

Appears in sequences

• Number of polygons with polygonal holes on the square lattice enumerated by half-perimeter.at n=9A088702
• n times pi(n) is made of nontrivial runs of identical digits, where pi(n)=A000720(n).at n=16A116057
• Poincaré series [or Poincare series] P(C_{5,2}(0); t).at n=19A124638
• Number of (unlabeled) rooted trees with n leaf nodes and without unary nodes such that the maximum of the node outdegrees equals three.at n=11A292229