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A104143
as a simple table
n
a(n)
1
1
2
2
3
6
4
21
5
43
6
44
7
50
8
52
9
53
10
103
11
121
12
123
13
197
14
203
15
204
[1,2,6,21,43,44,50,52,53,103,121,123,197,203,204]
