treesToCut(tier) = Math.ceiling(treesToCut(tier-1) * LOG16(18-tier)) with treesToCut(1) = 1

costToCut(tier) = costToCut(tier-1) * 2 with costToCut(1) = 64

Functions are recursive so suggest implementing as a precalculated array to avoid unnecessary logarithm calculations

Also change the recipe time from 20 ticks to 50 ticks for more balanced output at low energy tiers.