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A051068 as a simple table

na(n)
00
11
22
32
43
54
64
75
86
97
108
119
129
1310
1411
1511
1612
1713
1814
1915
2016
2116
2217
2318
2418
2519
2620
2720
2821
2922
3022
3123
3224
3324
3425
3526
3627
3728
3829
3929
4030
4131
4231
4332
4433
4534
4635
4736
4836
4937
5038
5138
5239
5340
5440
5541
5642
5742
5843
5944
6044
6145
6246
6347
6448
6549
6649

[0,1,2,2,3,4,4,5,6,7,8,9,9,10,11,11,12,13,14,15,
 16,16,17,18,18,19,20,20,21,22,22,23,24,24,25,26,
 27,28,29,29,30,31,31,32,33,34,35,36,36,37,38,38,
 39,40,40,41,42,42,43,44,44,45,46,47,48,49,49]