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A212120 as a simple table

na(n)
11
23
35
47
51
69
71
811
93
1013
113
1215
135
1417
155
161
1719
187
191
2021
217
221
2323
249
253
2625
279
283
2927
3011
313
3229
3311
345
3531
3613
375
381
3933
4013
415
421
4335
4415
457
461
4737
4815
497
501
5139
5217
537
543
5541
5617
579
583
5943
6019
619
623
6345
6419
659
663
6747
6821
6911
705
7149
7221
7311
745
751

[1,3,5,7,1,9,1,11,3,13,3,15,5,17,5,1,19,7,1,21,7,
 1,23,9,3,25,9,3,27,11,3,29,11,5,31,13,5,1,33,13,5,
 1,35,15,7,1,37,15,7,1,39,17,7,3,41,17,9,3,43,19,9,
 3,45,19,9,3,47,21,11,5,49,21,11,5,1]