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A022017
as a simple table
n
a(n)
1
1
2
3
3
8
4
29
5
103
6
442
7
1953
8
9502
9
48533
10
262634
11
1485764
12
8777397
13
53869119
[1,3,8,29,103,442,1953,9502,48533,262634,1485764, 8777397,53869119]