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A227873 as a simple table

na(n)
11
23
31
47
51
63
78
815
91
103
1112
127
1314
1424
151
1631
171
183
1920
207
2129
2236
231
2415
2526
2642
271
2856
291
303
3132
3263
3312
343
3543
367
3738
3860
3914
4015
4142
4287
431
4484
451
463
4748
4831
4957
5078
511
5298
531
543
5567
56120
5720
583
5960
607
6162
6296
6329
64127
6514
6636
6768
687
6970
70129
711
7215

[1,3,1,7,1,3,8,15,1,3,12,7,14,24,1,31,1,3,20,7,29,
 36,1,15,26,42,1,56,1,3,32,63,12,3,43,7,38,60,14,
 15,42,87,1,84,1,3,48,31,57,78,1,98,1,3,67,120,20,
 3,60,7,62,96,29,127,14,36,68,7,70,129,1,15]