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A071152 as a simple table

na(n)
00
120
22020
32200
4202020
5202200
6220020
7220200
8222000
920202020
1020202200
1120220020
1220220200
1320222000
1422002020
1522002200
1622020020
1722020200
1822022000
1922200020
2022200200
2122202000
2222220000
232020202020
242020202200

[0,20,2020,2200,202020,202200,220020,220200,
 222000,20202020,20202200,20220020,20220200,
 20222000,22002020,22002200,22020020,22020200,
 22022000,22200020,22200200,22202000,22220000,
 2020202020,2020202200]