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A203814 as a simple table

na(n)
01
12
23
34
45
56
67
78
89
910
101
1111
122
133
144
155
166
177
188
199
2010
2111
2212
2312
2413
2514
2615
2716
2817
2918
3019
3120
3221
3313
3422
3523
3624
3725
3826
3927
4028
4129
4230
4331
4414
4532
4633
4734
4835
4936
5037
5138
5239
5340
5441
5515
5642
5743
5844
5945
6046
6147
6248
6349
6450
6551
6616
6752
6853

[1,2,3,4,5,6,7,8,9,10,1,11,2,3,4,5,6,7,8,9,10,11,
 12,12,13,14,15,16,17,18,19,20,21,13,22,23,24,25,
 26,27,28,29,30,31,14,32,33,34,35,36,37,38,39,40,
 41,15,42,43,44,45,46,47,48,49,50,51,16,52,53]