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A081869 as a simple table

na(n)
12
23
34
45
59
610
711
821
922
1023
1145
1246
1391
1492
15183
16365
17729
181457
192913
205825
2111649
2211650
2323299
2446597
2593193
26186385
27186386
28372771
29745541
301491081
312982161
325964321
335964322
3411928643
3523857285
3647714569
3795429137
3895429138
39190858275

[2,3,4,5,9,10,11,21,22,23,45,46,91,92,183,365,729,
 1457,2913,5825,11649,11650,23299,46597,93193,
 186385,186386,372771,745541,1491081,2982161,
 5964321,5964322,11928643,23857285,47714569,
 95429137,95429138,190858275]