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A279931 as a simple table

na(n)
22
33
43
55
63
75
85
97
108
116
125
139
1411
159
166
1713
189
197
209
2111
2211
2312
249
2511
269
2711
2811
2913
309
3111
3217
3321
3411
3517
3633
3717
3811
3913
4019
4112
4215
4317
4421
4513
4623
4715
4821
4923
5021
5113
5213
5317
5427
5519
5625
5727
5819
5911
6015
6121
6219
6321
6423
6529
6617
6723
6817
6929
7015
7127
7223
7329
7431
7527
7619
7727
7823
7911
8029
8117
8223
8329
8423
8529
8617
8719
8829
8929
9023
9129
9233
9319
9429
9523
9621
9735
9821
9927
10027

[2,3,3,5,3,5,5,7,8,6,5,9,11,9,6,13,9,7,9,11,11,12,
 9,11,9,11,11,13,9,11,17,21,11,17,33,17,11,13,19,
 12,15,17,21,13,23,15,21,23,21,13,13,17,27,19,25,
 27,19,11,15,21,19,21,23,29,17,23,17,29,15,27,23,
 29,31,27,19,27,23,11,29,17,23,29,23,29,17,19,29,
 29,23,29,33,19,29,23,21,35,21,27,27]