(n+2)*2 n: prime number

2 corresponding: 8, 3 corresponding: 10, 5 corresponding: 14, 7 corresponding: 18,10/corresponding: 26.

So, the second title is: 26.

Generally speaking, doing this kind of problem is to find the law of several numbers before and after. If you can't find it, add, subtract, multiply and divide each other, and then find out the rules between the differences. There will always be some. Unless it's not a sequence.