We draw n non-crossing straight line segments inside an n X n square between 2*n grid points on its perimeter in such a way that it is not possible to add more non-crossing line segments between the remaining perimeter grid points. a(n) is the number of distinct possibilities for each n without duplicates by rotation or reflection.

A357757

We draw n non-crossing straight line segments inside an n X n square between 2*n grid points on its perimeter in such a way that it is not possible to add more non-crossing line segments between the remaining perimeter grid points. a(n) is the number of distinct possibilities for each n without duplicates by rotation or reflection.