round table has 15 seats, and n people have been seated in a certain way. When someone takes a seat, it is found that no matter where he sits, he will be adjacent to the person who is already sitting, what is the minimum value of n
一张圆桌有15个座位，已经有n个人按某种方式就座．当某人就座时，发现无论他坐在哪个位置，都将与已经就坐的人为邻，则n的最小值是多少
<gadget id="calculator">15 / 3</gadget>
<output>5</output>

<result>5</result>