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A130321 as a simple table

na(n)
01
12
21
34
42
51
68
74
82
91
1016
118
124
132
141
1532
1616
178
184
192
201
2164
2232
2316
248
254
262
271
28128
2964
3032
3116
328
334
342
351
36256
37128
3864
3932
4016
418
424
432
441
45512
46256
47128
4864
4932
5016
518
524
532
541
551024
56512
57256
58128
5964
6032
6116
628
634
642
651
662048
671024
68512
69256
70128
7164
7232
7316
748
754
762
771

[1,2,1,4,2,1,8,4,2,1,16,8,4,2,1,32,16,8,4,2,1,64,
 32,16,8,4,2,1,128,64,32,16,8,4,2,1,256,128,64,32,
 16,8,4,2,1,512,256,128,64,32,16,8,4,2,1,1024,512,
 256,128,64,32,16,8,4,2,1,2048,1024,512,256,128,64,
 32,16,8,4,2,1]