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A080203
as a simple table
n
a(n)
2
0
3
0
4
1
5
1
6
25
7
7
8
623
9
1183
10
24603
11
5895
12
2017603
13
242283
[0,0,1,1,25,7,623,1183,24603,5895,2017603,242283]
