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A297924 as a simple table

na(n)
01
11
24
320
4125
5952
68494
786025
8969862
912020580
10162203607
112363458396
1236930606254
13615302885459
1410878670826170
15203268056115256
163999642836434361
1782617423216826640
181786559190116778030
1940344863179696283037
20949348461372003462390

[1,1,4,20,125,952,8494,86025,969862,12020580,
 162203607,2363458396,36930606254,615302885459,
 10878670826170,203268056115256,3999642836434361,
 82617423216826640,1786559190116778030,
 40344863179696283037,949348461372003462390]