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A124731 as a simple table

na(n)
01
12
21
34
43
52
68
77
810
92
1016
1115
1234
1312
144
1532
1631
1798
1846
1932
204
2164
2263
23258
24144
25156
2636
278
28128
29127
30642
31402
32600
33192
3488
358
36256
37255
381538
391044
402004
41792
42560
4396
4416

[1,2,1,4,3,2,8,7,10,2,16,15,34,12,4,32,31,98,46,
 32,4,64,63,258,144,156,36,8,128,127,642,402,600,
 192,88,8,256,255,1538,1044,2004,792,560,96,16]