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A167221 as a simple table

na(n)
13
25
33
410
521
69
717
844
991
107
1170
125
13186
1471
153
16377
1797
18285
19760
20194
21323
221527
23574
241148
253062
2625
276133
284603
2912276
304605
312499
322187
335182
3424563
3518426
367775
3749138
3812440
399997
4098289
4136860
4273721
43196592
4482941
45393199
46294904
47786414
4849
49294907

[3,5,3,10,21,9,17,44,91,7,70,5,186,71,3,377,97,
 285,760,194,323,1527,574,1148,3062,25,6133,4603,
 12276,4605,2499,2187,5182,24563,18426,7775,49138,
 12440,9997,98289,36860,73721,196592,82941,393199,
 294904,786414,49,294907]