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A086706 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1110
1211
1311
1411
1511
1611
1711
1812
1912
2013
2114
2214
2314
2415
2515
2615
2716
2816
2916
3017
3117
3217
3317
3417
3517
3618
3718
3818
3918
4019
4119
4220
4320
4420
4521
4621
4721
4822
4922
5023
5123
5223
5323
5424
5524
5624
5724
5824
5924
6025
6125
6225
6326
6426
6526
6626
6726
6826
6926
7027
7127
7228

[1,2,3,4,5,6,7,8,9,10,10,11,11,11,11,11,11,12,12,
 13,14,14,14,15,15,15,16,16,16,17,17,17,17,17,17,
 18,18,18,18,19,19,20,20,20,21,21,21,22,22,23,23,
 23,23,24,24,24,24,24,24,25,25,25,26,26,26,26,26,
 26,26,27,27,28]