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A036233 as a simple table

na(n)
11
21
33
41
55
63
77
81
99
105
115
123
135
147
153
161
175
189
197
2020
213
2220
231
243
255
2620
279
281
297
303
3131
325
333
3420
3531
369
375
381
393
407
4120
4242
4331
447
459
4620
475
4842
491
5031
513
527
5353
549
5531
5620
573
585
597
6042
6153
621
639
6464
6531
6642
6720
6853
693
701
715
729
737
7464
7575
7631
771
7842
795
8020
819
8253
837
843
8564
8686
8775
8820

[1,1,3,1,5,3,7,1,9,5,5,3,5,7,3,1,5,9,7,20,3,20,1,
 3,5,20,9,1,7,3,31,5,3,20,31,9,5,1,3,7,20,42,31,7,
 9,20,5,42,1,31,3,7,53,9,31,20,3,5,7,42,53,1,9,64,
 31,42,20,53,3,1,5,9,7,64,75,31,1,42,5,20,9,53,7,3,
 64,86,75,20]