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A122155 as a simple table

na(n)
00
11
22
33
44
57
66
75
88
915
1014
1113
1212
1311
1410
159
1616
1731
1830
1929
2028
2127
2226
2325
2424
2523
2622
2721
2820
2919
3018
3117
3232
3363
3462
3561
3660
3759
3858
3957
4056
4155
4254
4353
4452
4551
4650
4749
4848
4947
5046
5145
5244
5343
5442
5541
5640
5739
5838
5937
6036
6135
6234
6333
6464
65127
66126
67125
68124
69123

[0,1,2,3,4,7,6,5,8,15,14,13,12,11,10,9,16,31,30,
 29,28,27,26,25,24,23,22,21,20,19,18,17,32,63,62,
 61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,
 45,44,43,42,41,40,39,38,37,36,35,34,33,64,127,126,
 125,124,123]