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A293866 as a simple table

na(n)
31
43
53
61
73
83
96
106
117
127
137
147
157
167
177
186
196
207
217
227
237
247
2511
2611
2712
2813
2914
3012
3113
3214
3314
3415
3516
3614
3715
3816
3916
4017
4117
4216
4317
4417
4514
4615
4716
4816
4917
5017
5116
5217
5317
5412
5513
5614
5713
5813
5914
6014
6115
6216
6316
6416
6516
6618
6717
6824
6917
7021
7121
7218
7321

[1,3,3,1,3,3,6,6,7,7,7,7,7,7,7,6,6,7,7,7,7,7,11,
 11,12,13,14,12,13,14,14,15,16,14,15,16,16,17,17,
 16,17,17,14,15,16,16,17,17,16,17,17,12,13,14,13,
 13,14,14,15,16,16,16,16,18,17,24,17,21,21,18,21]