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A065506 as a simple table

na(n)
31
42
57
615
739
884
9196
10419
11928
121965
134227
148871
1518742
1639032
1781481
18168606
19349011
20718371
211477783
223028412
236200296
2412660171
2525823604
2652569417
27106908199
28217086287
29440402878
30892384788
311806730377
323654428154

[1,2,7,15,39,84,196,419,928,1965,4227,8871,18742,
 39032,81481,168606,349011,718371,1477783,3028412,
 6200296,12660171,25823604,52569417,106908199,
 217086287,440402878,892384788,1806730377,
 3654428154]