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A066835 as a simple table

na(n)
11
21
31
42
52
62
75
86
93
102
115
126
137
143
153
164
174
184
195
205
217
226
233
243
255
265
275
286
296
306
316
324
334
345

[1,1,1,2,2,2,5,6,3,2,5,6,7,3,3,4,4,4,5,5,7,6,3,3,
 5,5,5,6,6,6,6,4,4,5]