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A133115 as a simple table

na(n)
11
23
31
47
53
61
711
87
97
101
1117
1211
1321
147
151
1623
1717
1847
1921
2011
211
2231
2323
2491
2547
2643
2711
281
2939
3031
31159
3291
33123
3443
3515
361
3749
3839
39259
40159
41295
42123
4373
4415
451
4659
4749
48399
49259
50627
51295
52255
5373
5419
551
5671
5759
58589
59399
601219
61627
62733
63255
64111
6519
661
6783
6871
69839
70589
712211
721219
731839
74733
75459
76111
7723
781

[1,3,1,7,3,1,11,7,7,1,17,11,21,7,1,23,17,47,21,11,
 1,31,23,91,47,43,11,1,39,31,159,91,123,43,15,1,49,
 39,259,159,295,123,73,15,1,59,49,399,259,627,295,
 255,73,19,1,71,59,589,399,1219,627,733,255,111,19,
 1,83,71,839,589,2211,1219,1839,733,459,111,23,1]