How to find 2013th term in this sequence?

Question:How to find 2013th term in this sequence?

Posted: toandhsp 300

December 22 2013

How to find 2013th term in the sequence

1, 2, 2, 3, 3, 3, 4, 4, 4, 4, ...?

in which the n-th positive integer appears n times.

I don't know how to start.

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