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A036391 as a simple table

na(n)
10
21
33
43
511
63
721
87
921
1011
1163
127
1377
1421
1523
1623
17171
1821
19183
2023
2149
2263
23333
2415
25231
2677
27183
2849
29473
3023
31441
3287
33147
34171
35161
3649
37671
38183
39161
4047
41903
4249
43903
44147
45161
46333
471521
4847
49903
50231
51343
52161
531727
54183
55483
56105
57427
58473
592439
6047

[0,1,3,3,11,3,21,7,21,11,63,7,77,21,23,23,171,21,
 183,23,49,63,333,15,231,77,183,49,473,23,441,87,
 147,171,161,49,671,183,161,47,903,49,903,147,161,
 333,1521,47,903,231,343,161,1727,183,483,105,427,
 473,2439,47]