Problems Description
<span style="color:#336699;font-family:'Times New Roman';font-size:18px;line-height:28px;background-color:#BBD8E9;">输入N，打印相应图案</span>
Input格式
<span style="color:#336699;font-family:'Times New Roman';font-size:18px;line-height:28px;background-color:#BBD8E9;">一行：整数N(0<N<=20)</span>
Output格式
<span style="color:#336699;font-family:'Times New Roman';font-size:18px;line-height:28px;background-color:#BBD8E9;">N行，每items数占四items字符位</span>
Sample
Sample Input 1
5
Sample Output 1
11
7 12
4 8 13
2 5 9 14
1 3 6 10 15
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