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A026839 as a simple table

na(n)
11
21
31
41
51
61
72
82
92
102
113
123
134
144
155
165
176
187
198
209
2110
2212
2313
2415
2517
2620
2722
2825
2928
3032
3136
3240
3345
3451
3557
3664
3771
3879
3989
4099
41110
42122
43137
44152
45168
46186
47208
48230
49253
50280
51311
52343
53378
54416
55461
56507
57558
58613
59675

[1,1,1,1,1,1,2,2,2,2,3,3,4,4,5,5,6,7,8,9,10,12,13,
 15,17,20,22,25,28,32,36,40,45,51,57,64,71,79,89,
 99,110,122,137,152,168,186,208,230,253,280,311,
 343,378,416,461,507,558,613,675]