Boost 4

1+ = 1 Stone 18+ = 50 Stones 35+ = 171 Stones
2+ = 2 Stones 19+ = 55 Stones 36+ = 180 Stones
3+ = 3 Stones 20+ = 60 Stones 37+ = 190 Stones
4+ = 4 Stones 21+ = 66 Stones 38+ = 200 Stones
5+ = 6 Stones 22+ = 72 Stones 39+ = 210 Stones
6+ = 8 Stones 23+ = 78 Stones 40+ = 220 Stones
7+ = 10 Stones 24+ = 84 Stones 41+ = 231 Stones
8+ = 12 Stones  25+ = 91 Stones 42+ = 242 Stones
9+ = 15 Stones 26+ = 98 Stones 43+ = 253 Stones
10+ = 18 Stones 27+ = 105 Stones 44+ = 264 Stones
11+ = 21 Stones 28+ = 112 Stones 45+ = 276 Stones
12+ = 24 Stones 29+ = 120 Stones 46+ = 288 Stones
13+ = 28 Stones 30+ = 128 Stones 47+ = 300 Stones
14+ = 32 Stones 31+ = 136 Stones 48+ = 312 Stones
15+ = 36 Stones 32+ = 144 Stones 49+ = 325 Stones
16+ = 40 Stones 33+ = 153 Stones 50+ = 338 Stones
17+ = 45 Stones 34+ = 162 Stones