Definition:Odd Integer/Odd-Times Odd/Sequence
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Definition
The sequence of odd-times odd integers begins:
- $9, 15, 21, 25, 27, \ldots$
This sequence is A071904 in the On-Line Encyclopedia of Integer Sequences (N. J. A. Sloane (Ed.), 2008).
Euclid's Definition
In the words of Euclid:
- An odd-times odd number is that which is measured by an odd number according to an odd number.