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A131668 as a simple table

na(n)
01
13
25
37
49
529
649
769
889
9199
10399
11599
12799
13999
142999
154999
166999
178999
1819999
1939999
2059999
2179999
2299999
23299999
24499999
25699999
26899999
271999999
283999999
295999999
307999999
319999999
3229999999
3349999999
3469999999
3589999999
36199999999

[1,3,5,7,9,29,49,69,89,199,399,599,799,999,2999,
 4999,6999,8999,19999,39999,59999,79999,99999,
 299999,499999,699999,899999,1999999,3999999,
 5999999,7999999,9999999,29999999,49999999,
 69999999,89999999,199999999]