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A101800 as a simple table

na(n)
00
11
216
32160
44644864
5220962816000
6126311423016960000
797655159393202733056000000
82873961139404949958783139840000000000
95118723340142578530942677236206891171840000000000

[0,1,16,2160,4644864,220962816000,
 126311423016960000,97655159393202733056000000,
 2873961139404949958783139840000000000,
 5118723340142578530942677236206891171840000000000]