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A208541 as a simple table

na(n)
15
210
310
455
5102
6430
71170
84435
914570
1053764
11190650
12704370
132581110
149608050
1535791470
16134301715
17505290270
181909209550
197233629130
2027489127708
21104715393910
22399827748310
231529755308210
245864083338770
2522517998136934
2686607770318380

[5,10,10,55,102,430,1170,4435,14570,53764,190650,
 704370,2581110,9608050,35791470,134301715,
 505290270,1909209550,7233629130,27489127708,
 104715393910,399827748310,1529755308210,
 5864083338770,22517998136934,86607770318380]