Grytczuk J, Kozik J, Witkowski M. Nonrepetitive Sequences on Arithmetic Progressions. Electron. J. Combin. [Internet]. 2011Oct.31 [cited 2026Apr.7];18(1):P209. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v18i1p209