Table 2 The frequencies of each type of edge uv in two dimensional lattice of titania nanotubes T[m, n], for \(m=1\) and \(m>1\).
From: On Zagreb coindices and Mostar index of \(TiO_2\) nanotubes
\(f(d_u,d_v)\) | \(m=1\) | \(m>1\) |
|---|---|---|
f(2.2) | 4 | 2 |
f(2, 3) | 0 | 4 |
f(2, 4) | \(8+16(n-1)\) | \(6+12(n-1)\) |
f(2, 5) | 0 | \(8mn-4(m+n)+2\) |
f(3, 3) | 0 | \(4+6(m-2)\) |
f(3, 4) | 0 | \(2+4(n-1)\) |
f(3, 5) | 0 | \(12mn-6m+8(1-2n)\) |
