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A180878
as a simple table
n
a(n)
1
1
2
0
3
-1
4
-1
5
-9
6
-5
7
-21
8
-21
9
-197
10
-117
11
-427
12
-427
13
-2501
14
-1797
15
-2909
16
-2909
17
-72877
18
-65453
[1,0,-1,-1,-9,-5,-21,-21,-197,-117,-427,-427, -2501,-1797,-2909,-2909,-72877,-65453]
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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)