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A071539 as a simple table

na(n)
10
218
3168
41170
57440
645738
7277368
81672290
910056480
1060404058
11362613768
122176238610
1313059075120
1478359331978
15470170537368
162821066664130
1716926529911360
18101559568461498
19609358576176168
203656154950132850
2121936940173733200
22131621672448624618
23789730128885258168

[0,18,168,1170,7440,45738,277368,1672290,10056480,
 60404058,362613768,2176238610,13059075120,
 78359331978,470170537368,2821066664130,
 16926529911360,101559568461498,609358576176168,
 3656154950132850,21936940173733200,
 131621672448624618,789730128885258168]