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A065515 as a simple table

na(n)
11
22
33
44
55
65
76
87
98
108
119
129
1310
1410
1510
1611
1712
1812
1913
2013
2113
2213
2314
2414
2515
2615
2716
2816
2917
3017
3118
3219
3319
3419
3519
3619
3720
3820
3920
4020
4121
4221
4322
4422
4522
4622
4723
4823
4924
5024
5124
5224
5325
5425
5525
5625
5725
5825
5926
6026
6127
6227
6327
6428
6528
6628
6729
6829
6929
7029
7130
7230
7331

[1,2,3,4,5,5,6,7,8,8,9,9,10,10,10,11,12,12,13,13,
 13,13,14,14,15,15,16,16,17,17,18,19,19,19,19,19,
 20,20,20,20,21,21,22,22,22,22,23,23,24,24,24,24,
 25,25,25,25,25,25,26,26,27,27,27,28,28,28,29,29,
 29,29,30,30,31]