从键盘输入行数N，１<=N<=9，输出以下图形。

<span style="font-family:宋体;">例如</span> 

<span style="font-family:宋体;">输入</span><span>5</span> 

<span style="font-family:宋体;">输出</span> 

<span>1</span> 

<span>121</span> 

<span>12321</span> 

<span>1234321</span> 

<span>123454321</span> 

<b><span></span></b>

<b><span></span></b>

<span></span>

<span style="font-family:宋体;">输入</span><span>8</span> 

<span style="font-family:宋体;">输出</span> 

<span>1</span> 

<span>121</span> 

<span>12321</span> 

<span>1234321</span> 

<span>123454321</span> 

<span>12345654321</span> 

<span>1234567654321</span> 

<span>123456787654321</span>