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A073168 as a simple table

na(n)
11
25
39
49
59
615
716
817
918
1017
1125
1219
1321
1427
1531
1626
1721
1822
1921
2035
2138
2231
2335
2431
2534
2633
2737
2839
2949
3049
3133
3252
3349
3447
3539
3643
3747
3847
3948
4048
4141
4249
4348
4460
4559
4659
4749
4852
4958
5058
5163
5271
5375
5465
5565
5667
5771
5879
5975
6081
6184
6277
6365
6469
6572
6672
6767
6869
6961
7065
7165

[1,5,9,9,9,15,16,17,18,17,25,19,21,27,31,26,21,22,
 21,35,38,31,35,31,34,33,37,39,49,49,33,52,49,47,
 39,43,47,47,48,48,41,49,48,60,59,59,49,52,58,58,
 63,71,75,65,65,67,71,79,75,81,84,77,65,69,72,72,
 67,69,61,65,65]