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A326766 as a simple table

na(n)
00
12
21
34
45
53
68
711
810
913
106
1115
127
1314
1418
159
1621
1712
1822
1924
2030
2117
2216
2331
2429
2533
2635
2738
2834
2939
3040
3119
3241
3343
3444
3542
3620
3747
3852
3950
4054
4155
4223
4357
4456
4525
4626
4760
4865
4964
5059
5158
5262
5363
5427
5570
5675
5767
5828
5979
6073
6169
6280
6378
6484
6532
6690

[0,2,1,4,5,3,8,11,10,13,6,15,7,14,18,9,21,12,22,
 24,30,17,16,31,29,33,35,38,34,39,40,19,41,43,44,
 42,20,47,52,50,54,55,23,57,56,25,26,60,65,64,59,
 58,62,63,27,70,75,67,28,79,73,69,80,78,84,32,90]