Research Article
Distance-Based Polynomials and Topological Indices for Hierarchical Hypercube Networks
Table 4
Number of pair of vertices of HHC-2 at different distances.
| | m | n | | 3 | 4 | 5 | 6 | 7 | 8 | . | . | . |
| | 7 | 192 | 320 | 448 | 576 | 704 | 832 | . | . | . | | 8 | 136 | 264 | 392 | 520 | 648 | 776 | . | . | . | | 9 | — | 192 | 320 | 448 | 576 | 704 | . | . | . | | 10 | — | 136 | 264 | 392 | 520 | 648 | . | . | . | | 11 | — | — | 192 | 320 | 448 | 576 | . | . | . | | 12 | — | — | 136 | 264 | 392 | 520 | . | . | . | | 13 | — | — | — | 192 | 320 | 448 | . | . | . | | 14 | — | — | — | 136 | 264 | 392 | . | . | . | | 15 | — | — | — | — | 192 | 320 | . | . | . | | 16 | — | — | — | — | 136 | 264 | . | . | . | | 17 | — | — | — | — | — | 192 | . | . | . | | 18 | — | — | — | — | — | 136 | . | . | . | | 19 | — | — | — | — | — | — | . | . | . | | 20 | — | — | — | — | — | — | — | . | . | | 21 | — | — | — | — | — | — | — | — | . |
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