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A175355 as a simple table

na(n)
11
231
3421
471
5131
6191
72551
8311
9391331
10431
1148241612864321
12911371
13971
141031
151091
161173913931
171511
181571
191811
201931
212111
222411
2324412261421
2424719131
252711
26289171
2729214673421
283014371
2930910331
3032565251351
313371
323491
333671

[1,31,421,71,131,191,2551,311,391331,431,
 48241612864321,911371,971,1031,1091,1173913931,
 1511,1571,1811,1931,2111,2411,24412261421,
 24719131,2711,289171,29214673421,3014371,30910331,
 32565251351,3371,3491,3671]