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A202907 as a simple table

na(n)
01
13
29
327
4211
5633
61899
75697
852297
9156891
10470673
111412019
1212675403
1338026209
14114078627
15342235881
163081171505
179243514515
1827730543545
1983191630635
20748691121283
212246073363849
226738220091547

[1,3,9,27,211,633,1899,5697,52297,156891,470673,
 1412019,12675403,38026209,114078627,342235881,
 3081171505,9243514515,27730543545,83191630635,
 748691121283,2246073363849,6738220091547]