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A179821 as a simple table

na(n)
00
11
22
32
44
55
64
73
88
99
1010
1110
128
139
146
154
1616
1717
1818
1918
2020
2121
2220
2311
2416
2517
2618
2718
2812
2913
308
315
3232
3333
3434
3534
3636
3737
3836
3919
4040
4141
4242
4342
4440
4541
4622
4720
4832
4933
5034
5134
5236
5337
5436
5519
5624
5725
5826
5926
6016
6117
6210
636
6464
6565
6666
6766
6868
6969
7068
7135
7272
7373
7474
7574

[0,1,2,2,4,5,4,3,8,9,10,10,8,9,6,4,16,17,18,18,20,
 21,20,11,16,17,18,18,12,13,8,5,32,33,34,34,36,37,
 36,19,40,41,42,42,40,41,22,20,32,33,34,34,36,37,
 36,19,24,25,26,26,16,17,10,6,64,65,66,66,68,69,68,
 35,72,73,74,74]