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A282701 as a simple table

na(n)
00
11
22
33
42
53
64
75
84
95
104
115
126
137
146
157
166
177
188
197
208
217

[0,1,2,3,2,3,4,5,4,5,4,5,6,7,6,7,6,7,8,7,8,7]