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A304676 as a simple table

na(n)
11
21
31
41
54
61
71
87
97
101
111
1213
1313
1413
151
161
1726
1823
1923
2026
211
221
2349
2445
2556
2645
2749
281
291
3099
31131
32199
33199
34131
3599
361
371
38194
39337
40598
41897
42598
43337
44194
451
461
47387
48883
491950
503525
513525
521950
53883
54387
551
561
57773
582389
596588
6015544
6120932
6215544
636588
642389

[1,1,1,1,4,1,1,7,7,1,1,13,13,13,1,1,26,23,23,26,1,
 1,49,45,56,45,49,1,1,99,131,199,199,131,99,1,1,
 194,337,598,897,598,337,194,1,1,387,883,1950,3525,
 3525,1950,883,387,1,1,773,2389,6588,15544,20932,
 15544,6588,2389]