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A234797 as a simple table

na(n)
11
21
35
417
5109
6649
75285
844513
9448861
104836601
1158743125
12766520657
1310939702669
14167136559849
152746173173765
1648016925121473
17893361709338301
1817582667488919001
19365487998075525045
207994319232001122097
21183644125043688405229
224418905413530661307849

[1,1,5,17,109,649,5285,44513,448861,4836601,
 58743125,766520657,10939702669,167136559849,
 2746173173765,48016925121473,893361709338301,
 17582667488919001,365487998075525045,
 7994319232001122097,183644125043688405229,
 4418905413530661307849]