Centering variable amount of objects around 0, 0, 0

Help and Feedback Code Review
#1

I’m wondering if there are any imperfections in my code or things that I could improve on as I have a feeling this isn’t very optimized or there’s a better more efficient method. Any and all help would be appreciated!

local partPositions = {}

local partDistance = 2

local odds = 0
local evens = 0
for i = 0, playerCount - 1 do
	if playerCount % 2 == 1 then
		if i == 0 then
			partPositions[i] = Vector3.new(0,0,0)
		else
			if i % 2 == 0 then
				evens += 1
				partPositions[i] = Vector3.new(evens * partDistance,0,0)
			else
				odds += 1
				partPositions[i] = Vector3.new(odds * -partDistance,0,0)
			end
		end
	else
		if i == 0 then
			partPositions[i] = Vector3.new(partDistance/2,0,0)
		elseif i == 1 then
			partPositions[i] = Vector3.new(-partDistance/2,0,0)
		else
			if i % 2 == 0 then
				evens += 1
				partPositions[i] = Vector3.new(evens * (partDistance + 1),0,0)
			else
				odds += 1
				partPositions[i] = Vector3.new(odds * (-partDistance - 1),0,0)
			end
		end
	end
end