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A073459 as a simple table

na(n)
15
216
340
498
5241
6591
71393
83386
98313
1020393
1150189
12123972
13308917
14776173
151953900
164942615
1712556599
1832045879
1982012870
20210587095
21542262360
221400124552
233623612454
249398492120
2524425121427
2663595807021
27165867439024

[5,16,40,98,241,591,1393,3386,8313,20393,50189,
 123972,308917,776173,1953900,4942615,12556599,
 32045879,82012870,210587095,542262360,1400124552,
 3623612454,9398492120,24425121427,63595807021,
 165867439024]