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A145640 as a simple table

na(n)
11
23
35
435
5315
63465
745045
845045
9255255
10969969
1129393
122028117
1350702925
14456326325
1513233463425
16820474732350
174512611027925
184512611027925
19166966608033225
2012843585233325
21526586994566325
2222643240766351975

[1,3,5,35,315,3465,45045,45045,255255,969969,
 29393,2028117,50702925,456326325,13233463425,
 820474732350,4512611027925,4512611027925,
 166966608033225,12843585233325,526586994566325,
 22643240766351975]