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A280028 as a simple table

na(n)
11
22
34
47
512
637
752
8239
9301
101993
112338
1220753
1323356
14266587
15291968
164134187
174446630
1875947059
1980652283
201625456353
211710094788
2239954587527
2341737658509
241114336791787
251157634258442
2634900173534517
2736096139358620
281216553712004063

[1,2,4,7,12,37,52,239,301,1993,2338,20753,23356,
 266587,291968,4134187,4446630,75947059,80652283,
 1625456353,1710094788,39954587527,41737658509,
 1114336791787,1157634258442,34900173534517,
 36096139358620,1216553712004063]