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A071420 as a simple table

na(n)
17
28
35
45
53
64
74
86
99
107
118
128
137
148
155
165
173
184
194
206
219
227
238
248
257
268
275
285
293
304
314
326
339

[7,8,5,5,3,4,4,6,9,7,8,8,7,8,5,5,3,4,4,6,9,7,8,8,
 7,8,5,5,3,4,4,6,9]