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A247502 as a simple table

na(n)
11
21
31
41
54
61
71
813
99
101
111
1241
1357
1416
151
161
17131
18320
19165
2025
211
221
23428
241711
251420
26380
2736
281
291
301429
318967
3211151
334620
34756
3549
361
371
384861
3946663
4083202
4149665
4212306
431358
4464
451
461
4716795
48242634
49602407
50495327
51172893
5228476
532262
5481
551

[1,1,1,1,4,1,1,13,9,1,1,41,57,16,1,1,131,320,165,
 25,1,1,428,1711,1420,380,36,1,1,1429,8967,11151,
 4620,756,49,1,1,4861,46663,83202,49665,12306,1358,
 64,1,1,16795,242634,602407,495327,172893,28476,
 2262,81,1]