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A077406
as a simple table
n
a(n)
1
0
2
3
3
5
4
15
5
17
6
53
7
1466
8
9717
9
32857
10
37340
11
37366
12
37367
13
531773
14
1596329
[0,3,5,15,17,53,1466,9717,32857,37340,37366,37367, 531773,1596329]