A series of numbers arranged according to the law: 2, 5, 9, 14, 20, 27, ..., what is the 2011th number in this series of numbers.
按规律排列的一列数：2，5，9，14，20，27，…，这列数的第2011个数是多少．
<gadget id="calculator">2 + 2_012</gadget>
<output>2_014</output>

<gadget id="calculator">2_011 / 2</gadget>
<output>2_011/2 = around 1_005.5</output>

<gadget id="calculator">2_014 * (2_011/2)</gadget>
<output>2_025_077</output>

<result>2_025_077</result>