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#1 Puzzles and Games » Next number in sequence! » 2017-01-14 08:39:23

chamywak
Replies: 1

I am going out of my mind at solving the missing number (X) in this sequence!
If you can help me out would you mind telling me how you did it?

1, 13, 16, 61, X, 217

Please put my mind to rest and help me out! Thank you in advance! smile

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