#5498. CSES2413 塔的计数
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CSES2413 塔的计数
Counting Towers
Your task is to build a tower whose width is 2 and height is n. You have an unlimited supply of blocks whose width and height are integers.
For example, here are some possible solutions for n=6:
Given n, how many different towers can you build? Mirrored and rotated towers are counted separately if they look different.
Input
The first input line contains an integer t: the number of tests. After this, there are t lines, and each line contains an integer n: the height of the tower.
Output
For each test, print the number of towers modulo 10^9+7.
Constraints
Example
Input
3
2
6
1337
Output
8
2864
640403945