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A185268 as a simple table

na(n)
12
22
33
42
52
66
75
810
910
1010
112
122
1310
1417
155
165
176
1828
1910
2010
2126
2210
2310
245
2512
2662
275
2829
2911
3050
3130
3210

[2,2,3,2,2,6,5,10,10,10,2,2,10,17,5,5,6,28,10,10,
 26,10,10,5,12,62,5,29,11,50,30,10]