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A153520 as a simple table

na(n)
12
27
37
42
594
62
72
8341
9341
102
112
12357
131340
14357
152
162
17373
184084
194084
20373
212
222
23389
246956
2517548
266956
27389
282
292
30405
319956
3253092
3353092
349956
35405
362
372
38421
3913084
40111740
41229020
42111740
4313084
44421
452
462
47437
4816340
49194516
50712404
51712404
52194516
5316340
54437
552

[2,7,7,2,94,2,2,341,341,2,2,357,1340,357,2,2,373,
 4084,4084,373,2,2,389,6956,17548,6956,389,2,2,405,
 9956,53092,53092,9956,405,2,2,421,13084,111740,
 229020,111740,13084,421,2,2,437,16340,194516,
 712404,712404,194516,16340,437,2]