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A047874 as a simple table

na(n)
11
21
31
41
54
61
71
813
99
101
111
1241
1361
1416
151
161
17131
18381
19181
2025
211
221
23428
242332
251821
26421
2736
281
291
301429
3114337
3217557
336105
34841
3549
361
371
384861
3989497
40167449
4183029
4216465
431513
4464
451
461
4716795
48569794
491604098
501100902
51296326
5238281
532521
5481
551

[1,1,1,1,4,1,1,13,9,1,1,41,61,16,1,1,131,381,181,
 25,1,1,428,2332,1821,421,36,1,1,1429,14337,17557,
 6105,841,49,1,1,4861,89497,167449,83029,16465,
 1513,64,1,1,16795,569794,1604098,1100902,296326,
 38281,2521,81,1]