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A168581 as a simple table

na(n)
11
21
32
42
53
63
74
85
95
106
117
127
138
149
1510
1610
1711
1812
1912
2013
2114
2215
2316
2417
2517
2618
2718
2819
2921
3022
3123
3223
3325
3425
3526
3627
3728
3829
3930
4030
4132
4232
4333
4433
4535
4637
4738
4838
4939
5040
5140
5242
5343
5444
5545
5645
5746
5847
5947
6049
6151
6252
6352
6453
6555
6656
6758
6858
6959
7060
7161
7262
7363
7464

[1,1,2,2,3,3,4,5,5,6,7,7,8,9,10,10,11,12,12,13,14,
 15,16,17,17,18,18,19,21,22,23,23,25,25,26,27,28,
 29,30,30,32,32,33,33,35,37,38,38,39,40,40,42,43,
 44,45,45,46,47,47,49,51,52,52,53,55,56,58,58,59,
 60,61,62,63,64]