In the following number series, a wrong number is given. Find out the wrong number.
6, 21, 66, 200, 606, 1821, 5466
1
21
2
200
3
5466
4
66
5
606
In the following number series, a wrong number is given. Find out the wrong number.
6, 21, 66, 200, 606, 1821, 5466