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A166548 as a simple table

na(n)
01
12
21
32
42
51
64
76
84
91
102
114
126
134
141
154
1610
1716
1814
196
201
214
2212
2322
2424
2516
266
271
288
2928
3056
3170
3256
3328
348
351
362
378
3828
3956
4070
4156
4228
438
441
454
4618
4764
48140
49196
50182
51112
5244
5310
541
554
5620
5774
58176
59280
60308
61238
62128
6346
6410
651

[1,2,1,2,2,1,4,6,4,1,2,4,6,4,1,4,10,16,14,6,1,4,
 12,22,24,16,6,1,8,28,56,70,56,28,8,1,2,8,28,56,70,
 56,28,8,1,4,18,64,140,196,182,112,44,10,1,4,20,74,
 176,280,308,238,128,46,10,1]