Chromatic Classes of 2-Connected (𝑛,𝑛+4)-Graphs with Exactly Three Triangles and at Least Two Induced 4-Cycles

Figure 1

31 types of 2-connected (𝑛,𝑛+4)-graphs with exactly three triangles and at least two induced 4-cycles. The light lines of the graphs refer to the paths of indicated length.