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A277059
as a simple table
n
a(n)
2
1
3
4
4
6
5
14
6
45
7
370
8
588
9
3364
10
11115
11
168496
12
271458
13
2442138
[1,4,6,14,45,370,588,3364,11115,168496,271458, 2442138]