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A269578 as a simple table

na(n)
13
29
327
479
5229
6659
71889
85401
915419
1043977
11125355
12357191
131017565
142898435
158255201
1623510865
1766956883
18190683433
19543031707
201546443295
214403932917
2212541401683
2335714999425
24101707905961
25289639951179
26824825396777

[3,9,27,79,229,659,1889,5401,15419,43977,125355,
 357191,1017565,2898435,8255201,23510865,66956883,
 190683433,543031707,1546443295,4403932917,
 12541401683,35714999425,101707905961,289639951179,
 824825396777]