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A263329
as a simple table
n
a(n)
1
0
2
1
3
2
4
17
5
18
6
84
7
939
8
1005
9
1006
10
1021
11
1022
12
1023
[0,1,2,17,18,84,939,1005,1006,1021,1022,1023]