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A160902 as a simple table

na(n)
12
22
32
43
55
63
75
87
97
105
115
1211
1311
1411
155
167
1711
1813
1913
2011
217
227
2313
2417
2517
2617
2713
287
2911
3017
3119
3223
3323
3419
3517
3611
3711
3817
3923
4029
4129
4229
4323
4417
4511
4611
4719
4829
4929
5031
5131
5229
5329
5419
5511
5611
5723
5829
5937
6037
6137
6237
6337
6429
6523
6611
6713
6823
6931
7037
7141
7243
7343
7441
7537

[2,2,2,3,5,3,5,7,7,5,5,11,11,11,5,7,11,13,13,11,7,
 7,13,17,17,17,13,7,11,17,19,23,23,19,17,11,11,17,
 23,29,29,29,23,17,11,11,19,29,29,31,31,29,29,19,
 11,11,23,29,37,37,37,37,37,29,23,11,13,23,31,37,
 41,43,43,41,37]