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A319781
as a simple table
n
a(n)
0
1
1
0
2
0
3
1
4
3
5
9
6
21
7
48
8
103
9
214
10
436
11
863
12
1689
[1,0,0,1,3,9,21,48,103,214,436,863,1689]
