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A341617 as a simple table

na(n)
11
21
32
46
512
660
730
8210
9840
102520
111260
1213860
1313860
14180180
1590090
1630030
17240240
184084080
196126120
20116396280
2158198140
2258198140

[1,1,2,6,12,60,30,210,840,2520,1260,13860,13860,
 180180,90090,30030,240240,4084080,6126120,
 116396280,58198140,58198140]