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A224075 as a simple table

na(n)
12
23
35
47
511
65
713
817
911
1019
1123
1229
137
1423
1531
1613
1729
1837
1917
2041
2123
2247
235
2429
2553
2611
2759
2813
2937
3053
3161
3219
3343
3459
3567
3623
3747
3871
3931
4071
4179
4259
4383
4441
4589
4617
4773
4889
4997
5059
5183
52107
5329
5461
55101
56109
5783
58107
59131
6017
6189
62113
63137
6419
6559

[2,3,5,7,11,5,13,17,11,19,23,29,7,23,31,13,29,37,
 17,41,23,47,5,29,53,11,59,13,37,53,61,19,43,59,67,
 23,47,71,31,71,79,59,83,41,89,17,73,89,97,59,83,
 107,29,61,101,109,83,107,131,17,89,113,137,19,59]