E_state_StN
Sum of E-state for tN type
E_state_SddC
Sum of E-state for ddC type
E_state_StsC
Sum of E-state for tsC type
E_state_SdssC
Sum of E-state for dssC type
E_state_SaasC
Sum of E-state for aasC type
E_state_SaaaC
Sum of E-state for aaaC type
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