There is a group of numbers: 1, 2, 5, 10, 17, 26,..., please observe the law of the composition of this group of numbers, and use the law you found to determine the eighth number as____ The nth number is ()

There is a group of numbers: 1, 2, 5, 10, 17, 26,..., please observe the law of the composition of this group of numbers, and use the law you found to determine the eighth number as____ The nth number is ()

The eighth number is__ 50__
The nth number is & nbsp; & nbsp; & nbsp; (n-1) & # 178; + 1 & nbsp; & nbsp; & nbsp; & nbsp;)
Observation shows that each number is one more than the square of the natural number
1=0²+1
2=1²+1
5=2²+1
……
The eighth number is 7 & # 178; + 1 = 50
The nth number is (n-1) &# 178; + 1