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A089856 as a simple table

na(n)
00
11
22
33
44
55
68
77
86
99
1010
1111
1212
1313
1421
1522
1620
1717
1818
1919
2016
2114
2215
2323
2424
2525
2626
2727
2828
2929
3030
3131
3232
3333
3434
3535
3636
3758
3859
3962
4063
4164
4257
4361
4454
4545
4646
4755
4848
4949
5050
5156
5260
5353
5444
5547
5651
5742
5837
5938
6052
6143
6239
6340
6441
6565
6666
6767
6868
6969
7070
7171
7272

[0,1,2,3,4,5,8,7,6,9,10,11,12,13,21,22,20,17,18,
 19,16,14,15,23,24,25,26,27,28,29,30,31,32,33,34,
 35,36,58,59,62,63,64,57,61,54,45,46,55,48,49,50,
 56,60,53,44,47,51,42,37,38,52,43,39,40,41,65,66,
 67,68,69,70,71,72]