Improve the previous Design Honeycomb structure

Dear laurent
For populate 2D, I’ve tried, but I still can’t get what I want.
Also, using a line of desired length was my original design. Now I just want to find the center point and then randomly materialize a hollow grid, but it can not appear two consecutive. If two consecutive hollow hexagons are materialized, three consecutive hollow hexagons cannot appear.
Please check the following website