Table 11 Magic formulas for the hexagonal bipyramid

Atoms

4n³+6n²+4n+1, n≥1

Bonds

24n³+15n²+3n, n≥0

cn=3

2, n≥1

cn=5

6, n≥1

cn=6

3n+3, n≥1

cn=7

24n−24, n≥1

cn=8

6n²−15n+9, n≥1

cn=9

6n²−12n+6, n≥1

cn=12

4n³−6n²+4n−1, n≥1