Narumi_ATI
Narumi arithmetic topological index
Narumi_GTI
Narumi geometric topological index
Narumi_HTI
Narumi harmonic topological index
Odd_even_index
Odd-even index
Platt_number
The sum over all elements of the edge adjacency matrix
Pogliani_index
Pogliani index
Quadratic_index
Quadratic index
Ramification_index
The sum runs over all the vertex degrees greater than two
Ring_degree_distance_index
Ring degree-distance index
Rouvray_index
The total sum of the elements of the distance matrix