This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Delannoy.svg Caminos de Delannoy para una cuadrcula de Chemins de Delannoy Henri Auguste Delannoy dans un rectangle Own drini dominio pblico Lattice paths SVG mathematics
Page 2023 Free-images.com. All images are Public Domain