Given a non-decreasing sequence S = (s 1 , s 2 , . . . , s k ) of positive integers, an Spacking coloring of a graph G is a partition of the vertex set of G into k subsets {V 1 , V 2 , . . . , V k } such that for each 1 ≤ i ≤ k, the distance between any two distinct vertices u and v in V i is at least s i + 1. In this paper, we study the problem of S-packing coloring of cubic Halin graphs, and we prove that every cubic Halin graph is (1, 1, 2, 3)-packing colorable. In addition, we prove that such graphs are (1, 2, 2, 2, 2, 2)-packing colorable.
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