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A060156 as a simple table

na(n)
110
250
3333
42500
520000
6166666
71428571
812500000
9111111111
101000000000
119090909090
1283333333333
13769230769230
147142857142857
1566666666666666
16625000000000000

[10,50,333,2500,20000,166666,1428571,12500000,
 111111111,1000000000,9090909090,83333333333,
 769230769230,7142857142857,66666666666666,
 625000000000000]