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A283986 as a simple table

na(n)
11
21
33
43
53
63
73
83
95
107
117
127
137
147
157
165
175
185
197
207
2111
2213
237
247
257
267
2713
2811
297
307
315
325
337
347
3513
3613
3715
3815
3915
4011
4111
4211
4313
4413
4513
4615
4715
4811
4911
5015
5115
5213
5313
5413
5511
5611
5711
5815
5915
6015
6113
6213
637
647
657
667
6715
6815
6915
7015
7113
7213
7315
7415
7527
7623
7723
7827
7915
8015
8115
8215
8327
8427
8529
8629
8731
8823
8921
9029
9131
9223
9323
9425
9511
9611
9711
9811
9925

[1,1,3,3,3,3,3,3,5,7,7,7,7,7,7,5,5,5,7,7,11,13,7,
 7,7,7,13,11,7,7,5,5,7,7,13,13,15,15,15,11,11,11,
 13,13,13,15,15,11,11,15,15,13,13,13,11,11,11,15,
 15,15,13,13,7,7,7,7,15,15,15,15,13,13,15,15,27,23,
 23,27,15,15,15,15,27,27,29,29,31,23,21,29,31,23,
 23,25,11,11,11,11,25]