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A268826 as a simple table

na(n)
00
11
23
32
46
57
64
75
818
919
1016
1117
1210
1311
148
159
1626
1727
1824
1925
2034
2135
2232
2333
2414
2515
2612
2713
2830
2931
3028
3129
3242
3343
3440
3541
3650
3751
3848
3949
4062
4163
4260
4361
4446
4547
4644
4745
4822
4923
5020
5121
5254
5355
5452
5553
5666
5767
5864
5965
6058
6159
6256
6357
6474
6575
6672
6773
6882
6983
7080
7181
7294
7395
7492
7593
7678
7779
7876
7977
80118
81119
82116
83117
8486
8587

[0,1,3,2,6,7,4,5,18,19,16,17,10,11,8,9,26,27,24,
 25,34,35,32,33,14,15,12,13,30,31,28,29,42,43,40,
 41,50,51,48,49,62,63,60,61,46,47,44,45,22,23,20,
 21,54,55,52,53,66,67,64,65,58,59,56,57,74,75,72,
 73,82,83,80,81,94,95,92,93,78,79,76,77,118,119,
 116,117,86,87]