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A231710 as a simple table

na(n)
15
217
317
442
587
642
7121
8387
9387
10121
11351
121903
132840
141903
15351
16978
179352
1823584
1923584
209352
21978
222768
2345126
24197605
25332529
26197605
2745126
282768
297851
30218976
311601683
324734057
334734057
341601683
35218976
367851
3722168
381063266
3913087828

[5,17,17,42,87,42,121,387,387,121,351,1903,2840,
 1903,351,978,9352,23584,23584,9352,978,2768,45126,
 197605,332529,197605,45126,2768,7851,218976,
 1601683,4734057,4734057,1601683,218976,7851,22168,
 1063266,13087828]