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A060284 as a simple table

na(n)
10
20
33
40
50
66
7142857
80
91
100
119
123
1376923
14714285
156
160
17588235294117647
185
1952631578947368421
200
2147619
2245
23434782608695652173913
246
250
26384615
2737
28571428
29344827586206896551724137931
303
3132258064516129
320
333
342941176470588235
35285714
367
3727
38263157894736842105

[0,0,3,0,0,6,142857,0,1,0,9,3,76923,714285,6,0,
 588235294117647,5,52631578947368421,0,47619,45,
 434782608695652173913,6,0,384615,37,571428,
 344827586206896551724137931,3,32258064516129,0,3,
 2941176470588235,285714,7,27,263157894736842105]