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A319516 as a simple table

na(n)
11
21
31
42
51
61
73
84
93
101
117
122
139
143
151
168
1713
183
1915
202
213
227
2319
244
255
269
279
286
2925
301
3127
3216
337
3413
353
366
3733
3815
399
404
4137
423
4339
4414
453
4619
4743
488
4921
505
5113
5218
5349
549
557
5612
5715
5825
5955
602
6157
6227
639
6432
659
667
6763
6826
6919
703
7167
7212
7369
7433
755
7630
7721
789
7975
808

[1,1,1,2,1,1,3,4,3,1,7,2,9,3,1,8,13,3,15,2,3,7,19,
 4,5,9,9,6,25,1,27,16,7,13,3,6,33,15,9,4,37,3,39,
 14,3,19,43,8,21,5,13,18,49,9,7,12,15,25,55,2,57,
 27,9,32,9,7,63,26,19,3,67,12,69,33,5,30,21,9,75,8]