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A093874 as a simple table

na(n)
12
23
34
44
55
65
76
86
97
107
117
128
138
148
159
169
179
189
1910
2010
2110
2211
2311
2411
2511
2612
2712
2812
2912
3013
3113
3213
3313
3414
3514
3614
3714
3814
3915
4015
4115
4215
4316
4416
4516
4616
4716
4816
4917
5017
5117
5217
5317
5417
5518
5618
5718
5818
5918
6019
6119
6219
6319
6419
6520
6620
6720
6820
6920
7020
7121
7221
7321
7421
7521

[2,3,4,4,5,5,6,6,7,7,7,8,8,8,9,9,9,9,10,10,10,11,
 11,11,11,12,12,12,12,13,13,13,13,14,14,14,14,14,
 15,15,15,15,16,16,16,16,16,16,17,17,17,17,17,17,
 18,18,18,18,18,19,19,19,19,19,20,20,20,20,20,20,
 21,21,21,21,21]