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A014704 as a simple table

na(n)
01
172
22400
352576
4870732
511739984
6134825216
71359259200
812290396058
9101268020984
10769721861376
115449376818656
1236216000728200
13227395735413552
141356190070338560
157717657198319936
1642069113073665703
17220400042813587800

[1,72,2400,52576,870732,11739984,134825216,
 1359259200,12290396058,101268020984,769721861376,
 5449376818656,36216000728200,227395735413552,
 1356190070338560,7717657198319936,
 42069113073665703,220400042813587800]