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A054238 as a simple table

na(n)
00
11
22
34
43
58
65
76
89
910
1016
117
1212
1311
1432
1517
1618
1713
1814
1933
2034
2120
2219
2324
2415
2536
2635
2740
2821
2922
3025
3126
3237
3338
3441
3542
3664
3723
3828
3927
4048
4139
4244
4343
44128
4565
4666
4729
4830
4949
5050
5145
5246
53129
54130
5568
5667
5772
5831
5952
6051
6156
6247
63132
64131
65136
6669
6770
6873
6974

[0,1,2,4,3,8,5,6,9,10,16,7,12,11,32,17,18,13,14,
 33,34,20,19,24,15,36,35,40,21,22,25,26,37,38,41,
 42,64,23,28,27,48,39,44,43,128,65,66,29,30,49,50,
 45,46,129,130,68,67,72,31,52,51,56,47,132,131,136,
 69,70,73,74]