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A021015 as a simple table

na(n)
00
19
20
39
40
59
60
79
80
99
100
119
120
139
140
159
160
179
180
199
200
219
220
239
240
259
260

[0,9,0,9,0,9,0,9,0,9,0,9,0,9,0,9,0,9,0,9,0,9,0,9,
 0,9,0]