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A170739 as a simple table

na(n)
01
120
2380
37220
4137180
52606420
649521980
7940917620
817877434780
9339671260820
106453753955580
11122621325156020
122329805177964380
1344266298381323220
14841059669245141180
1515980133715657682420
16303622540597495965980
175768828271352423353620
18109607737155696043718780

[1,20,380,7220,137180,2606420,49521980,940917620,
 17877434780,339671260820,6453753955580,
 122621325156020,2329805177964380,
 44266298381323220,841059669245141180,
 15980133715657682420,303622540597495965980,
 5768828271352423353620,109607737155696043718780]