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A280066 as a simple table

na(n)
13
29
339
4170
5790
63729
717468
882769
9394904
101890877
119080800
1243650638
13210047292
141011165147
154869719373
1623456281889
17113000007399
18544411868911
192623011742357
2012638188505237
2160894518951302
22293410920660702

[3,9,39,170,790,3729,17468,82769,394904,1890877,
 9080800,43650638,210047292,1011165147,4869719373,
 23456281889,113000007399,544411868911,
 2623011742357,12638188505237,60894518951302,
 293410920660702]