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A117859 as a simple table

na(n)
16
26
342
442
5294
6294
72058
82058
914406
1014406
11100842
12100842
13705894
14705894
154941258
164941258
1734588806
1834588806
19242121642
20242121642
211694851494
221694851494
2311863960458
2411863960458
2583047723206
2683047723206
27581334062442
28581334062442

[6,6,42,42,294,294,2058,2058,14406,14406,100842,
 100842,705894,705894,4941258,4941258,34588806,
 34588806,242121642,242121642,1694851494,
 1694851494,11863960458,11863960458,83047723206,
 83047723206,581334062442,581334062442]