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A084731 as a simple table

na(n)
12
22
32
42
55
62
72
82
910
106
112
1261
1314
1415
155
1624
1719
182
1946
203
2111
2222
2341
242
2512
2622
273
282

[2,2,2,2,5,2,2,2,10,6,2,61,14,15,5,24,19,2,46,3,
 11,22,41,2,12,22,3,2]