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A060620 as a simple table

na(n)
12
22
33
44
55
66
78
89
911
1012
1114
1216
1318
1420
1521
1623
1725
1827
1929
2031
2133
2235
2338
2440
2542
2644
2746
2848
2951
3053
3155
3257
3360
3462
3565
3667
3769
3872
3974
4077
4179
4282
4384
4487
4589
4691
4794
4897
4999
50102
51104
52107
53110
54112
55115
56117
57120
58123
59125
60128
61130
62133
63136
64138
65141
66144

[2,2,3,4,5,6,8,9,11,12,14,16,18,20,21,23,25,27,29,
 31,33,35,38,40,42,44,46,48,51,53,55,57,60,62,65,
 67,69,72,74,77,79,82,84,87,89,91,94,97,99,102,104,
 107,110,112,115,117,120,123,125,128,130,133,136,
 138,141,144]