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A363209
as a simple table
n
a(n)
1
1
2
1
3
3
4
10
5
52
6
288
7
1826
8
11702
9
76586
10
501429
11
3289245
12
21554198
[1,1,3,10,52,288,1826,11702,76586,501429,3289245, 21554198]