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A366331
as a simple table
n
a(n)
0
1
1
0
2
1
3
1
4
0
5
2
6
20
7
0
8
272
9
1208
10
0
11
127334
12
1958084
13
0
[1,0,1,1,0,2,20,0,272,1208,0,127334,1958084,0]