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A059442 as a simple table

na(n)
02
13
23
34
46
54
65
79
89
95
106
1114
1218
1314
146
157
1618
1725
1825
1918
207
218
2223

[2,3,3,4,6,4,5,9,9,5,6,14,18,14,6,7,18,25,25,18,7,
 8,23]