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A298727 as a simple table

na(n)
11
21
31
41
55
61
71
87
97
101
111
1218
135
1418
151
161
1731
1815
1915
2031
211
221
2365
2421
2534
2621
2765
281
291
30130
3157
3277
3377
3457
35130
361
371
38253
39119
40230
41336
42230
43119
44253
451
461
47519
48285
49712
501041
511041
52712
53285
54519
551
561
571018
58725
592167
603676
614001
623676
632167
64725
651018
661

[1,1,1,1,5,1,1,7,7,1,1,18,5,18,1,1,31,15,15,31,1,
 1,65,21,34,21,65,1,1,130,57,77,77,57,130,1,1,253,
 119,230,336,230,119,253,1,1,519,285,712,1041,1041,
 712,285,519,1,1,1018,725,2167,3676,4001,3676,2167,
 725,1018,1]