perplexus.info :: Sequences : Difficult Sequence

Difficult Sequence (Posted on 2003-10-18)

What is the next number in the sequence? 21,45,66,102,115,171,?

See The Solution Submitted by Freddy Grants

Rating: 3.6667 (9 votes)

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hint?

| Comment 13 of 19 |

Freddy, time for a hint, perhaps?

Posted by pleasance on 2003-10-24 07:28:54

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