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A047858 as a simple table

na(n)
01
12
21
35
43
51
613
78
84
91
1033
1120
1211
135
141
1581
1648
1727
1814
196
201
21193
22112
2363
2434
2517
267
271
28449
29256
30143
3178
3241
3320
348
351
361025
37576
38319
39174
4093
4148
4223
439
441
452305
461280
47703
48382
49205
50108
5155
5226
5310
541
555121
562816
571535
58830
59445
60236
61123
6262
6329
6411
651

[1,2,1,5,3,1,13,8,4,1,33,20,11,5,1,81,48,27,14,6,
 1,193,112,63,34,17,7,1,449,256,143,78,41,20,8,1,
 1025,576,319,174,93,48,23,9,1,2305,1280,703,382,
 205,108,55,26,10,1,5121,2816,1535,830,445,236,123,
 62,29,11,1]