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A347945 as a simple table

na(n)
00
12
23
31
46
57
65
710
811
98
1014
1115
124
1318
1419
1513
1622
1723
1816
1926
2027
2112
2230
2331
2421
2534
2635
2724
2838
2939
3017
3142
3243
3329
3446
3547
3632
3750
3851
399
4054
4155
4237
4358
4459
4540
4662
4763
4828
4966
5067
5145
5270
5371
5448
5574
5675
5733
5878
5979
6053
6182
6283
6356

[0,2,3,1,6,7,5,10,11,8,14,15,4,18,19,13,22,23,16,
 26,27,12,30,31,21,34,35,24,38,39,17,42,43,29,46,
 47,32,50,51,9,54,55,37,58,59,40,62,63,28,66,67,45,
 70,71,48,74,75,33,78,79,53,82,83,56]