Progressions in Euclidean Ramsey theory

Conlon and Wu showed that there is a red/blue-coloring of ${\mathbb{E}}^n$ that does not contain $3$ red collinear points separated by unit distance and $m={10}^{50}$ blue collinear points separated by unit distance. We prove that the statement holds with $m=1177$. We show similar results with different distances between the points.