There are n consecutive odd numbers starting from 1 written on the blackboard. After removing one of the odd numbers, the sum of the remaining odd numbers is 2006. What is the removed odd number?
黑板上写有从1开始的连续n个奇数，去掉其中一个奇数后，剩下的奇数之和为2006，那么去掉的这个奇数是多少．
<gadget id="calculator">45 ** 2</gadget>
<output>2_025</output>

<gadget id="calculator">2_025 - 2_006</gadget>
<output>19</output>

<result>19</result>