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A057561 as a simple table

na(n)
11
22
32
43
54
65
75
86
97
107
118
128
139
1410
1511
1611
1712
1813
1913
2014
2114
2215
2316
2417
2517
2618
2718
2819
2920
3021
3121
3222
3322
3423
3524
3625
3725
3826
3926
4027
4128
4229
4330
4430
4531
4631
4732
4833
4933
5034
5135
5235
5336
5436
5537
5638
5739
5839
5940
6041
6142
6242
6342
6443
6544
6645
6745
6846
6947

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