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A154589
as a simple table
n
a(n)
0
4
1
-1
2
-2
3
-4
4
-8
5
-16
6
-32
7
-64
8
-128
9
-256
10
-512
11
-1024
12
-2048
13
-4096
14
-8192
15
-16384
16
-32768
17
-65536
[4,-1,-2,-4,-8,-16,-32,-64,-128,-256,-512,-1024, -2048,-4096,-8192,-16384,-32768,-65536]
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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)