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A239585 as a simple table

na(n)
12
22
33
42
52
63
73
85
95
107
1111
1211
1313
1411
1511
1613
1713
1811
1917
2013
2111
2217
2311
2419
2513
2617
2713
2811
2919
3011
3111
3213
3317
3411
3517
3623
3713
3819
3913
4011
4119
4213
4317
4411
4523
4611
4713
4817
4919
5023
5117
5211
5313
5419
5511
5613
5717
5811
5919
6029
6123
6211
6313
6419
6529
6617
6711

[2,2,3,2,2,3,3,5,5,7,11,11,13,11,11,13,13,11,17,
 13,11,17,11,19,13,17,13,11,19,11,11,13,17,11,17,
 23,13,19,13,11,19,13,17,11,23,11,13,17,19,23,17,
 11,13,19,11,13,17,11,19,29,23,11,13,19,29,17,11]