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A121581 as a simple table

na(n)
11
21
31
41
53
62
71
89
911
103
111
1233
1343
1439
154
161
17153
18193
19199
20169
215
221
23873
241057
251099
261081
27923
286
291
305913
316937
327147
337171
347027
356117
367
371
3846233
3953017
4054187
4154403
4254307
4353413
4447311
458
461
47409113
48461257
49468907
50470203
51470323
52469483
53463399

[1,1,1,1,3,2,1,9,11,3,1,33,43,39,4,1,153,193,199,
 169,5,1,873,1057,1099,1081,923,6,1,5913,6937,7147,
 7171,7027,6117,7,1,46233,53017,54187,54403,54307,
 53413,47311,8,1,409113,461257,468907,470203,
 470323,469483,463399]