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A087885
as a simple table
n
a(n)
1
0
2
1
3
3
4
17
5
143
6
261
7
551
8
2285
9
18731
10
18995
11
19751
12
62067
13
98051
14
169727
15
442281
[0,1,3,17,143,261,551,2285,18731,18995,19751, 62067,98051,169727,442281]