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A177862
as a simple table
n
a(n)
0
1
1
2
2
3
3
4
4
4
5
6
6
7
7
5
8
8
9
9
10
10
11
11
12
6
13
10
14
12
15
13
16
14
17
15
18
16
19
7
20
12
21
15
22
16
23
17
24
18
25
19
26
20
27
21
28
22
[1,2,3,4,4,6,7,5,8,9,10,11,6,10,12,13,14,15,16,7, 12,15,16,17,18,19,20,21,22]