A series of numbers is known: 2, 5, 8, 11, 14, ..., 44, ..., from the previous series, we can know that 44 is the number in this series of numbers.
已知一列数：2，5，8，11，14，…，44，…，由以前数列可知44是这列数中的第多少个数．
<result>15</result>