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A074347 as a simple table

na(n)
11
22
33
412
513
652
753
8131
9271
10811
111601
122711
138111
1413997
1534589
1674551
17147773
18310567
19621227
201230343
212627759
224921373
2310741931
2424965191
2545887291
26111477631
27183638843
28394195667
29788380493
301576798931

[1,2,3,12,13,52,53,131,271,811,1601,2711,8111,
 13997,34589,74551,147773,310567,621227,1230343,
 2627759,4921373,10741931,24965191,45887291,
 111477631,183638843,394195667,788380493,
 1576798931]