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A027525 as a simple table

na(n)
11
21
38
454
513500
63087000
73652264
81157625
9456533
10166375
114492125
121728000
13394444512000
14240827600093696
15869479900246125
16384557787648000
1790468670208000
1883064482131968
1913819853214706176
2045242839158999552000
2122447962513858357000

[1,1,8,54,13500,3087000,3652264,1157625,456533,
 166375,4492125,1728000,394444512000,
 240827600093696,869479900246125,384557787648000,
 90468670208000,83064482131968,13819853214706176,
 45242839158999552000,22447962513858357000]