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A237628 as a simple table

na(n)
33
415
515
6105
7105
81155
91155
101365
1115015
1215015
1315015
14255255
15255255
16596505
174849845
184849845
194849845
2010140585
2110140585
22179444265
23229474245
24229474245
25242777535
26640049865
275898837945
287357214865
297357214865
307357214865
3113350001665
32196656364905

[3,15,15,105,105,1155,1155,1365,15015,15015,15015,
 255255,255255,596505,4849845,4849845,4849845,
 10140585,10140585,179444265,229474245,229474245,
 242777535,640049865,5898837945,7357214865,
 7357214865,7357214865,13350001665,196656364905]