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A077492 as a simple table

na(n)
12
24
36
48
51
63
75
87
99
1011
1113
1215
1317
1419
1539
1659
1779
1899
19119
20139
21159
22179
23199
24399
25599
26799
27999
281199
291399
301599
311799
321999
333999
345999
357999
369999
3711999
3813999
3915999
4017999
4119999
4239999
4359999
4479999
4599999
46119999
47139999
48159999
49179999

[2,4,6,8,1,3,5,7,9,11,13,15,17,19,39,59,79,99,119,
 139,159,179,199,399,599,799,999,1199,1399,1599,
 1799,1999,3999,5999,7999,9999,11999,13999,15999,
 17999,19999,39999,59999,79999,99999,119999,139999,
 159999,179999]