题目描述
2) Krishna had just completed his class on trees. To make things worse , the teacher had asked them to draw all possible ‘Binary Trees’ as an assignment . After persistent requests, the teacher relaxed the assignment by asking them to tell the number of trees possible given the number of keys. Krishna started of his assignment in excitement but soon realized that the assignment was in no way easier than before when he saw large ‘n’ values. Can you help Krishna with his assignment ?
Output the answer mod 1e9+7
Input
t- no of testcases
n- no of keys
Constraints:
1 ≤ t ≤ 50
1 ≤ n ≤ 1000
SAMPLE INPUT
4
1
2
3
4
SAMPLE OUTPUT
1
2
5
14
输入格式
见题面
输出格式
见题面
样例输入
10
885
798
519
716
670
635
652
576
744
504
样例输出
2577836352
738559760
1891442308
4294726944
4278679056
1630982816
1445767984
1088206816
3503228056
986122620