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A120503 as a simple table

na(n)
11
22
33
43
54
65
76
86
97
108
119
129
139
1410
1511
1612
1712
1813
1914
2015
2115
2216
2317
2418
2518
2618
2719
2820
2921
3021
3122
3223
3324
3424
3525
3626
3727
3827
3927
4027
4128
4229
4330
4430
4531
4632
4733
4833
4934
5035
5136
5236
5336
5437
5538
5639
5739
5840
5941
6042
6142
6243
6344
6445
6545
6645
6746
6847
6948
7048
7149
7250
7351
7451

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