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A089865 as a simple table

na(n)
00
11
22
33
44
55
66
78
87
99
1010
1111
1212
1313
1414
1515
1619
1720
1821
1916
2022
2117
2218
2323
2424
2525
2626
2727
2828
2929
3030
3131
3232
3333
3434
3535
3636
3737
3838
3939
4040
4141
4251
4352
4453
4554
4655
4756
4857
4958
5059
5142
5243
5360
5461
5562
5644
5763
5845
5946
6047
6164
6248
6349
6450
6565
6666
6767
6868
6969

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