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A208726 as a simple table

na(n)
16
211
320
445
5104
6290
7796
82366
97076
1021684
1166996
12209594
13659560
142090590
156659120
1621312716
1768476512
18220798322
19714144612
202316303916
217531662344
2224545750474
2380160395804
24262280793024
25859662037240
262822180991508
279278652591844
2830547892144882

[6,11,20,45,104,290,796,2366,7076,21684,66996,
 209594,659560,2090590,6659120,21312716,68476512,
 220798322,714144612,2316303916,7531662344,
 24545750474,80160395804,262280793024,859662037240,
 2822180991508,9278652591844,30547892144882]