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A147674 as a simple table

na(n)
081
127
29
327
427
59
627
781
89
981
1027
119
1227
1327
149
1527
1681
179
1881
1927
209
2127
2227
239
2427
2581
269
2781
2827
299
3027
3127
329
3327
3481
359

[81,27,9,27,27,9,27,81,9,81,27,9,27,27,9,27,81,9,
 81,27,9,27,27,9,27,81,9,81,27,9,27,27,9,27,81,9]