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A360863
as a simple table
n
a(n)
1
0
2
1
3
3
4
5
5
13
6
36
7
99
8
301
9
980
10
3345
11
12036
12
45399
13
178420
14
729149
[0,1,3,5,13,36,99,301,980,3345,12036,45399,178420, 729149]