接下来重复n个非负整数：和：
0, ...................................... 0
0, 1, ................................... 1
1, 2, 2, ................................ 5
3, 3, 4, 4, ............................. 14
5, 5, 6, 6, 7, .......................... 29
7, 8, 8, 9, 9, 10, .…………51等。
