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A055739 as a simple table

na(n)
02
13
217
371
4251
5857
62767
78803
827211
982939
10249779
11744949
122201273
136463081
1418858529
1554764947
16158330573
17456016933
181309050653
193746543923
2010694444393
2130453898201
2286534078387
23245401348403
24694683409429

[2,3,17,71,251,857,2767,8803,27211,82939,249779,
 744949,2201273,6463081,18858529,54764947,
 158330573,456016933,1309050653,3746543923,
 10694444393,30453898201,86534078387,245401348403,
 694683409429]