Surface profile measurement by noncontact optical methods has been extensively studied because of its importance in automated manufacturing, component quality control, medicine, and robotics. In most of these methods a known periodic pattern,

给定一个自然数n，由n开始可以依次产生半数集set(n)中的数如下。 (1) n∈set(n)； (2) 在n的左边加上一个自然数，但该自然数不能超过最近添加的数的一半； (3) 按此规则进行处理，直到不能再添加自然数为止。 例如，set(6)={6,16,26,126,36,136}。半数集set(6)中有6 个元素。-Given a natural number n, by n half of the start can have a set order set (n