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A049474 as a simple table

na(n)
00
11
22
33
43
54
65
75
86
97
108
118
129
1310
1410
1511
1612
1713
1813
1914
2015
2115
2216
2317
2417
2518
2619
2720
2820
2921
3022
3122
3223
3324
3425
3525
3626
3727
3827
3928
4029
4129
4230
4331
4432
4532
4633
4734
4834
4935
5036
5137
5237
5338
5439
5539
5640
5741
5842
5942
6043
6144
6244
6345
6446
6546
6647

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