42 cells in series * 4 is 4 more cells than you have total and that would be only 23.1 volts per cell. So you'll need to buy more cells to start with an 23.1 volts is probably not going to be enough for a charge controller for a 24 volt charge controller. You need to design the panel with the specification of a charge controller in mind, you can't really start with just the panel in the first place.
For series wiring you would wire the + of each panel the previous panels - lead until you get the desired number of panels, then wire each series panel in parallel with the next to increase possible current..
You know one thing so far, you have 164 cells, based on the wattage of each cell you have a total possible output power of 250 watts, so look for 300-350 watt charge controllers for 12 or 24 volt battery systems, find out what their ideal running voltage is and design the series string to match that voltage then parallel for the remainder of cells, you'll probably have to buy a few more to get an even number of parallel strings which is why I recommend 300-350watt charge controller not a 250, besides in general it's a good idea to over buy a little. Given the wattage 12 or 24 volts systems are probably going to be pretty common and inexpensive.
Keep in mind again please that a 12 volt charge control system is going to need MORE than 12 volts, which is why you have to buy with a specific charge controller in mind with IT'S specs as the primary design parameter for your pane. Without a good matched charge controller those cells are useless.