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A261179 as a simple table

na(n)
11
22
33
43
55
65
75
87
97
107
115
1211
1311
1413
159
1613
1711
189
1911
2013
2115
2213
2319
2417
2511
2619
2717
2821
2919
3013
317
3213
3319
3423
3529
3625
3723
3825
3927
4031
4129
4231
4313
4413
4525
4623
4731
4817
4923
5027
5125
5219
5317
5417
559
5619
5727
5821
5937
6031
6135
6241
6341
6437
6533
6629
6749
6837
6949
7041
7127
7241
7333
7441
7531
7615
7731
7839
7933
8041
8141
8249
8337
8435
8541
8639
8719
8837
8941
9031
9143
9223
9331
9437
9527
9623
9715
9827

[1,2,3,3,5,5,5,7,7,7,5,11,11,13,9,13,11,9,11,13,
 15,13,19,17,11,19,17,21,19,13,7,13,19,23,29,25,23,
 25,27,31,29,31,13,13,25,23,31,17,23,27,25,19,17,
 17,9,19,27,21,37,31,35,41,41,37,33,29,49,37,49,41,
 27,41,33,41,31,15,31,39,33,41,41,49,37,35,41,39,
 19,37,41,31,43,23,31,37,27,23,15,27]