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A319476
as a simple table
n
a(n)
1
0
2
1
3
2
4
2
5
3
6
5
7
5
8
6
9
5
10
7
11
9
12
7
13
8
14
11
15
13
16
9
17
11
18
14
19
16
20
17
21
19
22
21
23
21
24
14
25
14
[0,1,2,2,3,5,5,6,5,7,9,7,8,11,13,9,11,14,16,17,19, 21,21,14,14]