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A127388 as a simple table

na(n)
00
11
22
33
44
55
66
78
87
99
1010
1111
1213
1312
1414
1515
1619
1722
1821
1916
2020
2118
2217
2323
2424
2525
2627
2726
2828
2929
3033
3136
3235
3330
3434
3532
3631
3737
3838
3939
4041
4140
4251
4352
4460
4564
4663
4756
4862
4959
5058
5142
5243
5353
5454
5555
5647
5761
5850
5949
6044
6157
6248
6346
6445
6565
6666
6767
6869
6968
7070
7171

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