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A333018
as a simple table
n
a(n)
0
1
1
1
2
1
3
3
4
10
5
44
6
249
7
1513
8
9992
9
68305
10
480748
11
3450793
12
25186583
[1,1,1,3,10,44,249,1513,9992,68305,480748,3450793, 25186583]