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A233278 as a simple table

na(n)
00
11
22
33
45
54
66
77
812
910
109
118
1213
1311
1414
1515
1627
1723
1821
1919
2020
2118
2217
2316
2428
2525
2624
2722
2829
2926
3030
3131
3258
3353
3448
3546
3644
3741
3840
3938
4043
4139
4237
4335
4436
4534
4633
4732
4859
4954
5052
5149
5251
5347
5445
5542
5660
5756
5855
5950
6061
6157
6262
6363
64121
65113
66108

[0,1,2,3,5,4,6,7,12,10,9,8,13,11,14,15,27,23,21,
 19,20,18,17,16,28,25,24,22,29,26,30,31,58,53,48,
 46,44,41,40,38,43,39,37,35,36,34,33,32,59,54,52,
 49,51,47,45,42,60,56,55,50,61,57,62,63,121,113,
 108]