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A180200 as a simple table

na(n)
00
11
22
33
45
54
66
77
810
911
109
118
1213
1312
1414
1515
1621
1720
1822
1923
2018
2119
2217
2316
2426
2527
2625
2724
2829
2928
3030
3131
3242
3343
3441
3540
3645
3744
3846
3947
4037
4136
4238
4339
4434
4535
4633
4732
4853
4952
5054
5155
5250
5351
5449
5548
5658
5759
5857
5956
6061
6160
6262
6363
6485
6584
6686
6787
6882
6983
7081
7180
7290

[0,1,2,3,5,4,6,7,10,11,9,8,13,12,14,15,21,20,22,
 23,18,19,17,16,26,27,25,24,29,28,30,31,42,43,41,
 40,45,44,46,47,37,36,38,39,34,35,33,32,53,52,54,
 55,50,51,49,48,58,59,57,56,61,60,62,63,85,84,86,
 87,82,83,81,80,90]