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A343975 as a simple table

na(n)
01
13
215
381
4489
53237
623211
7178707
81467051
912768345
10117263829
111131901521
1211444383251
13120847326879
141329303053391
1515197269729689
16180211641841353
172212525627591533
1828078380387448515
19367782119667874083
204965441830591976339
2169014083524412401873
22986364827548578356421

[1,3,15,81,489,3237,23211,178707,1467051,12768345,
 117263829,1131901521,11444383251,120847326879,
 1329303053391,15197269729689,180211641841353,
 2212525627591533,28078380387448515,
 367782119667874083,4965441830591976339,
 69014083524412401873,986364827548578356421]