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A219523 as a simple table

na(n)
17
215
374
4465
52125
69292
737442
8146163
9554185
102025086
117113545
1223974181
1377690406
14242798386
15733943376
162151321628
176127503021
1816989704367
1945932207763
20121260063820
21313015935010
22791017133814
231959057933111

[7,15,74,465,2125,9292,37442,146163,554185,
 2025086,7113545,23974181,77690406,242798386,
 733943376,2151321628,6127503021,16989704367,
 45932207763,121260063820,313015935010,
 791017133814,1959057933111]