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A260684 as a simple table

na(n)
22
32
43
53
63
75
85
95
107
115
127
135
147
157
167
1711
187
1911
207
2111
2213
2311
2413
2511
2613
2711
2813
2911
3013
3117
3211
3313
3417
3511
3613
3717
3819
3911
4013
4117
4219
4311
4413
4517
4619
4713
4817
4919
5013
5117
5219
5323
5413
5517
5619
5723
5813
5917
6019
6123

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