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A195868 as a simple table

na(n)
13
25
37
47
59
611
711
813
913
1015
1116
1217
1317
1419
1519
1621
1723
1823
1924
2025
2125
2227
2329
2429
2531
2631
2732
2832
2933
3035
3137
3240
3340
3440
3541
3643
3747
3848
3949
4053
4155
4255
4356

[3,5,7,7,9,11,11,13,13,15,16,17,17,19,19,21,23,23,
 24,25,25,27,29,29,31,31,32,32,33,35,37,40,40,40,
 41,43,47,48,49,53,55,55,56]