Question on the "max # of 1-4 neighbors" in Lammps log file

Dear Everyone,

I have a question on the “max # of 1-4 neighbors” in Lammps log file.

We created a system of 3 atoms (they constructed an angle) and looked at the 1-4 neighbor max, and it is 1.

For 3 atoms, there shouldn’t be any 1-4 neighbor. Is there an error somewhere in the code?

Thank you very much,

I doubt there is any error. It could be the code
always reserves at least one location in the data
array. It’s only internal bookkeeping either way.
Why is this issue important to your model?