Table 3 Degrees, frequencies and non-adjacencies of the representative vertices in the 2D lattice of \(TiO_2[m,n]\), for \(m=1\).

From: On Zagreb coindices and Mostar index of \(TiO_2\) nanotubes

Representative

Degree

Frequency

Non-adjacency (\(N_u\))

u

2

1(2)=2

\(12n-5\)

v

2

2(2)=4

\(12n-5\)

y

2

\(2+4(n-1)\)

\(12n-5\)

e

4

\(2+4(n-1)\)

\(12n-7\)

f

2

\(0+4(n-1)\)

\(12n-5\)

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