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A347755 as a simple table

na(n)
01
12
22
32
42
52
62
72
83
93
103
117
127
137
147
157
167
177
187
197
2011
2111
2211
2311
2411
2511
2611
2711
2817
2917
3017
3117
3217
3317
3417
3517
3617
3719
3819
3919
4019
4119
4219
4319
4419
4519
4619
4719
4819
4919
5019
5123
5223
5331
5431
5531
5631
5731
5831
5931
6031
6131
6231
6331
6431
6531
6631
6731
6831
6931
7031

[1,2,2,2,2,2,2,2,3,3,3,7,7,7,7,7,7,7,7,7,11,11,11,
 11,11,11,11,11,17,17,17,17,17,17,17,17,17,19,19,
 19,19,19,19,19,19,19,19,19,19,19,19,23,23,31,31,
 31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31]