Input 1 2 4 5 10 12

Question

Output 3 5 9 11 21 25
Write the rule

Answer 1

1 3
2 5
3 try constant difference of 2 -->7
4 9
5 11
6 -->13
7 -->15
8 -->17
9 -->19
10 21
11 --> 23
12 25 so it worked
accordind to my rule
0 1
so
y(n) = 2 + y(n-1)
or y(n) = 1 + 2(n)
y = 2 n + 1