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A303775 as a simple table

na(n)
00
11
23
32
46
54
65
77
815
914
1012
118
1213
139
1411
1510
1630
1716
1817
1919
2018
2123
2220
2321
2431
2522
2654
2750
2848
2932
3051
3149
3233
3355
3453
3552
3636
3760
3828
3924
4029
4125
4227
4326
4463
4561
4657
4756
4840
4962
5058
5134
5259
5335
5439
5538
5646
5744
5845
5937
6047
6141
6243
6342
64106
6564
6685
6784
6880
6986
7082
7166
7287
7381
7465
7583
7667
7791
7890
7988
8072
8189
8273
8395
8494
8592
8668
8793
8869

[0,1,3,2,6,4,5,7,15,14,12,8,13,9,11,10,30,16,17,
 19,18,23,20,21,31,22,54,50,48,32,51,49,33,55,53,
 52,36,60,28,24,29,25,27,26,63,61,57,56,40,62,58,
 34,59,35,39,38,46,44,45,37,47,41,43,42,106,64,85,
 84,80,86,82,66,87,81,65,83,67,91,90,88,72,89,73,
 95,94,92,68,93,69]