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A106649 as a simple table

na(n)
00
11
22
33
44
55
66
77
88
99
1019
1118
1217
1316
1415
1514
1613
1712
1811
1910
2029
2128
2227
2326
2425
2524
2623
2722
2821
2920
3039
3138
3237
3336
3435
3534
3633
3732
3831
3930
4049
4148
4247
4346
4445
4544
4643
4742
4841
4940
5059
5158
5257
5356
5455
5554
5653
5752
5851
5950
6069
6168
6267
6366
6465
6564
6663
6762
6861
6960
7079
7178
7277

[0,1,2,3,4,5,6,7,8,9,19,18,17,16,15,14,13,12,11,
 10,29,28,27,26,25,24,23,22,21,20,39,38,37,36,35,
 34,33,32,31,30,49,48,47,46,45,44,43,42,41,40,59,
 58,57,56,55,54,53,52,51,50,69,68,67,66,65,64,63,
 62,61,60,79,78,77]