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A075697 as a simple table

na(n)
17
23
34
43
57
610
73
89
911
109
119
121
135
147
158
169
176
186
197
208
216
227
238
249
259
2610
279
2810
2911
302
319
327
335
3414
3515
3616
3717
3817
3918
4018
4119
426
438
4413
457
469
477
489
4911
5017
5119
524
537
549
557
568
579
5816
595
606
617
629
638
649
6515
668
679
6819
697
708
719
728
739
7417
7511
7617
779
7810
7912
8015
8117
8218
8319
8413
851
862
873
887
899

[7,3,4,3,7,10,3,9,11,9,9,1,5,7,8,9,6,6,7,8,6,7,8,
 9,9,10,9,10,11,2,9,7,5,14,15,16,17,17,18,18,19,6,
 8,13,7,9,7,9,11,17,19,4,7,9,7,8,9,16,5,6,7,9,8,9,
 15,8,9,19,7,8,9,8,9,17,11,17,9,10,12,15,17,18,19,
 13,1,2,3,7,9]