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A163355 as a simple table

na(n)
00
11
23
32
414
515
613
712
84
97
105
116
128
1311
149
1510
1616
1719
1817
1918
2020
2121
2223
2322
2430
2529
2631
2728
2824
2925
3027
3126
3258
3357
3459
3556
3654
3753
3855
3952
4060
4161
4263
4362
4450
4551
4649
4748
4832
4935
5033
5134
5236
5337
5439
5538
5646
5745
5847
5944
6040
6141
6243
6342
64234
65235
66233
67232
68236
69239

[0,1,3,2,14,15,13,12,4,7,5,6,8,11,9,10,16,19,17,
 18,20,21,23,22,30,29,31,28,24,25,27,26,58,57,59,
 56,54,53,55,52,60,61,63,62,50,51,49,48,32,35,33,
 34,36,37,39,38,46,45,47,44,40,41,43,42,234,235,
 233,232,236,239]