Currie J. A Ternary Square-free Sequence Avoiding Factors Equivalent to $abcacba$. Electron. J. Combin. [Internet]. 2016May27 [cited 2026Jun.5];23(2):#P2.41. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v23i2p41