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A168070 as a simple table

na(n)
10
21
310
4100
51000
610000
7100000
81000000
910000000
1071624305
11100000000
12103849576
13105823694
14106597243
15108326947
16120463578
17124093657
18126509743
19129306745
20129738560
21139784256
22140786329
23147863502
24148936025
25150973624

[0,1,10,100,1000,10000,100000,1000000,10000000,
 71624305,100000000,103849576,105823694,106597243,
 108326947,120463578,124093657,126509743,129306745,
 129738560,139784256,140786329,147863502,148936025,
 150973624]