In the following number series, one number is wrong. Find that wrong number. 16, 8, 13, 30, 105, 472.5

The series is 16, 8, 13, 30, 105, 472.5. Pattern: ×0.5, +5, ×2+4, ×3+15, ×4.5-... Wait - checking pattern: 16→8 (÷2 or ×0.5), 8→13 (+5), 13→30 (×2+4 or ×2.3), 30→105 (×3.5), 105→472.5 (×4.5). The pattern is ×0.5, +5, ×2+4, ×3.5, ×4.5. Actually pattern is: ×0.5, +5, ×2+4, ×3.5, ×4.5 - multipliers increase by 1.5, 1, 1.5, 1... Hmm. Better pattern: 16×0.5=8, 8+5=13, 13×2.307≈30 (not clean). Alternative: 16÷2=8, 8+5=13, 13×2+4=30, 30×3.5=105, 105×4.5=472.5. The operations are: ÷2, +5, ×2+4, ×3.5, ×4.5. The 13 doesn't fit - should be 8×something to continue multiplier pattern. If pattern was ×0.5, ×1.5, ×2.5, ×3.5, ×4.5 then 8×1.5=12, not 13. So 13 is wrong.