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A079750 as a simple table

na(n)
30
44
525
6156
71099
88800
979209
10792100
118713111
12104557344
131359245485
1419029436804
15285441552075
164567064833216
1777640102164689
181397521838964420
1926552914940323999
20531058298806480000
2111152224274936080021

[0,4,25,156,1099,8800,79209,792100,8713111,
 104557344,1359245485,19029436804,285441552075,
 4567064833216,77640102164689,1397521838964420,
 26552914940323999,531058298806480000,
 11152224274936080021]