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A197401 as a simple table

na(n)
11
21
31
41
51
61
71
89
99
101
111
1217
1317
1417
151
161
1733
1881
1981
2033
211
221
2389
24257
25547
26257
2789
281
291
30249
311003
322571
332571
341003
35249
361
371
38553
393417
4013397
4119603
4213397
433417
44553
451
461
471321
4812673
4978101
50159463
51159463
5278101
5312673
541321
551
561
573361
5846165
59423957

[1,1,1,1,1,1,1,9,9,1,1,17,17,17,1,1,33,81,81,33,1,
 1,89,257,547,257,89,1,1,249,1003,2571,2571,1003,
 249,1,1,553,3417,13397,19603,13397,3417,553,1,1,
 1321,12673,78101,159463,159463,78101,12673,1321,1,
 1,3361,46165,423957]