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A316203
as a simple table
n
a(n)
1
1
2
8
3
78
4
1253
5
36585
6
1962143
7
189577494
8
33224254530
9
10584753639371
[1,8,78,1253,36585,1962143,189577494,33224254530, 10584753639371]