141284

Appears in sequences

• Number of partially achiral trees with n nodes.at n=22A003243
• Number of asymmetric mobiles (circular rooted trees) with n nodes and 6 leaves.at n=10A055367
• Pythagorean triples (X, Y, Z) that are the componentwise products of 2 primitive Pythagorean triples (x,y,z) and (r,s,t), that is, X=x*r, Y=y*s, ordered by increasing Z.at n=31A340790