On packing chromatic number of subcubic outerplanar graphs
On packing chromatic number of subcubic outerplanar graphs
Although it has recently been proved that the packing chromatic number is unbounded on the class of subcubic graphs, there exists subclasses in which the packing chromatic number is finite (and small). These subclasses include subcubic trees, base-3 Sierpi{\'n}ski graphs and hexagonal lattices.In this paper we are interested in the …