6Â Â Â Â Â Â Â Â Â Â Â Â Â 7Â Â Â Â Â Â Â Â Â Â Â Â Â 15Â Â Â Â Â Â Â Â Â Â 46Â Â Â Â Â Â Â Â Â Â 185Â Â Â Â Â Â Â Â ?
6 ×1+1 = 7 7 ×2+1= 15 15 ×3+1 = 46 46 ×4+1= 185 185 ×5+1 = 926
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