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A074687 as a simple table

na(n)
00
11
23
32
46
57
68
74
85
915
1014
1116
1217
1318
1419
1520
1622
1713
189
1921
2010
2111
2212
2339
2440
2541
2637
2738
2843
2942
3044
3145
3246
3347
3448
3549
3650
3752
3851
3953
4054
4155
4260
4361
4462
4534
4633
4763
4836
4927
5023
5156
5257
5364
5435
5524
5658
5726
5832
5929
6059
6125
6228
6330
6431
65113
66112
67114
68115
69116

[0,1,3,2,6,7,8,4,5,15,14,16,17,18,19,20,22,13,9,
 21,10,11,12,39,40,41,37,38,43,42,44,45,46,47,48,
 49,50,52,51,53,54,55,60,61,62,34,33,63,36,27,23,
 56,57,64,35,24,58,26,32,29,59,25,28,30,31,113,112,
 114,115,116]