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A340402 as a simple table

na(n)
00
11
23
32
45
54
66
77
813
912
1014
1115
128
139
1411
1510
1621
1720
1822
1923
2016
2117
2219
2318
2424
2525
2627
2726
2829
2928
3030
3131
3255
3354
3452
3553
3650
3751
3849
3948
4058
4159
4257
4356
4463
4562
4660
4761
4834
4935
5033
5132
5239
5338
5436
5537
5647
5746
5844
5945
6042
6143
6241
6340
6489
6588
6690
6791

[0,1,3,2,5,4,6,7,13,12,14,15,8,9,11,10,21,20,22,
 23,16,17,19,18,24,25,27,26,29,28,30,31,55,54,52,
 53,50,51,49,48,58,59,57,56,63,62,60,61,34,35,33,
 32,39,38,36,37,47,46,44,45,42,43,41,40,89,88,90,
 91]