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A119239 as a simple table

na(n)
11
23
39
415
545
6105
7315
8945
91575
102835
113465
1210395
1317325
1431185
1545045
16135135
17225225
18405405
19675675
202027025
212297295
223828825
236891885
2411486475
2534459425
2643648605
2772747675
28130945815
29218243025
30654729075
311003917915
321527701175

[1,3,9,15,45,105,315,945,1575,2835,3465,10395,
 17325,31185,45045,135135,225225,405405,675675,
 2027025,2297295,3828825,6891885,11486475,34459425,
 43648605,72747675,130945815,218243025,654729075,
 1003917915,1527701175]