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A238205 as a simple table

na(n)
63
75
87
95
105
117
127
137
145
155
167
1713
1811
197
207
217
2211
2311
2413
2513
267
277
287
2911
3011
3111
3217
3311
3413
3513
3613
3719
3813
3913
4011
4111
4211
4323
4411
4513
4617
4713
4813
4913
5019
5113
5213
5319
5417
5519
5619
5719
5829
5923
6023
6117
6211
6311
6411
6517
6611
6713
6817
6917
7019
7123
7219
7313
7413
7513

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