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A347489 as a simple table

na(n)
11
21
38
41
557
6456
71
8400
92850
1022800
11182400
121
132801
14140050
151120400
167982850
1763862800
18510902400
191
2019608
216865251
2248177200
2354922008
242746100400
2519565965350
2621968803200
27156527722800
281252221782400
2910017774259200
301
31137257
32336416907
3316531644851
342691335256

[1,1,8,1,57,456,1,400,2850,22800,182400,1,2801,
 140050,1120400,7982850,63862800,510902400,1,19608,
 6865251,48177200,54922008,2746100400,19565965350,
 21968803200,156527722800,1252221782400,
 10017774259200,1,137257,336416907,16531644851,
 2691335256]